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122513006880 = 253251131249497
BaseRepresentation
bin111001000011001011…
…0000010000100100000
3102201020010211120212100
41302012112002010200
54001401312210010
6132140502530400
711564662243035
oct1620626020440
9381203746770
10122513006880
1147a59442410
121b8b1436a00
13b725a1bba4
145d02dc138c
1532c09002c0
hex1c86582120

122513006880 has 288 divisors, whose sum is σ = 470796738048. Its totient is φ = 28741939200.

The previous prime is 122513006873. The next prime is 122513006881. The reversal of 122513006880 is 88600315221.

It is a happy number.

122513006880 is a `hidden beast` number, since 1 + 2 + 2 + 513 + 0 + 0 + 68 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (122513006881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366292 + ... + 615788.

It is an arithmetic number, because the mean of its divisors is an integer number (1634710896).

Almost surely, 2122513006880 is an apocalyptic number.

122513006880 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 122513006880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235398369024).

122513006880 is an abundant number, since it is smaller than the sum of its proper divisors (348283731168).

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

122513006880 is a wasteful number, since it uses less digits than its factorization.

122513006880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249560 (or 249549 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 122513006880 in words is "one hundred twenty-two billion, five hundred thirteen million, six thousand, eight hundred eighty".