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12494299680 = 2533519292181
BaseRepresentation
bin10111010001011011…
…11110001000100000
31012020202020012001000
423220231332020200
5201042020042210
65423444112000
7621422536452
oct135055761040
935222205030
1012494299680
115331785305
122508395600
1312416a2145
1486752c2d2
154d1d5eac0
hex2e8b7e220

12494299680 has 576 divisors, whose sum is σ = 47937052800. Its totient is φ = 3030773760.

The previous prime is 12494299679. The next prime is 12494299681. The reversal of 12494299680 is 8699249421.

12494299680 is a `hidden beast` number, since 1 + 2 + 494 + 2 + 99 + 68 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (12494299679) and next prime (12494299681).

It is a super-2 number, since 2×124942996802 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12494299681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69029190 + ... + 69029370.

It is an arithmetic number, because the mean of its divisors is an integer number (83224050).

Almost surely, 212494299680 is an apocalyptic number.

12494299680 is a gapful number since it is divisible by the number (10) 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 12494299680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23968526400).

12494299680 is an abundant number, since it is smaller than the sum of its proper divisors (35442753120).

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

12494299680 is a wasteful number, since it uses less digits than its factorization.

12494299680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 12494299680 in words is "twelve billion, four hundred ninety-four million, two hundred ninety-nine thousand, six hundred eighty".