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12513146016 = 253780923017
BaseRepresentation
bin10111010011101011…
…10111010010100000
31012022001200200100110
423221311313102200
5201111331133031
65425400051320
7622041662160
oct135165672240
935261620313
1012513146016
115341387898
122512763b40
131245570417
14869c365a0
154d3833c46
hex2e9d774a0

12513146016 has 96 divisors (see below), whose sum is σ = 37587473280. Its totient is φ = 3570610176.

The previous prime is 12513145999. The next prime is 12513146029. The reversal of 12513146016 is 61064131521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532140 + ... + 555156.

It is an arithmetic number, because the mean of its divisors is an integer number (391536180).

Almost surely, 212513146016 is an apocalyptic number.

12513146016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12513146016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18793736640).

12513146016 is an abundant number, since it is smaller than the sum of its proper divisors (25074327264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12513146016 is a wasteful number, since it uses less digits than its factorization.

12513146016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23846 (or 23838 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 12513146016 its reverse (61064131521), we get a palindrome (73577277537).

The spelling of 12513146016 in words is "twelve billion, five hundred thirteen million, one hundred forty-six thousand, sixteen".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 168 224 336 672 809 1618 2427 3236 4854 5663 6472 9708 11326 12944 16989 19416 22652 23017 25888 33978 38832 45304 46034 67956 69051 77664 90608 92068 135912 138102 161119 181216 184136 271824 276204 322238 368272 483357 543648 552408 644476 736544 966714 1104816 1288952 1933428 2209632 2577904 3866856 5155808 7733712 15467424 18620753 37241506 55862259 74483012 111724518 130345271 148966024 223449036 260690542 297932048 391035813 446898072 521381084 595864096 782071626 893796144 1042762168 1564143252 1787592288 2085524336 3128286504 4171048672 6256573008 12513146016