12907455660 has 144 divisors (see below), whose sum is σ = 42787180800. Its totient is φ = 3123569280.

The previous prime is 12907455637. The next prime is 12907455719. The reversal of 12907455660 is 6655470921.

12907455660 is a `hidden beast` number, since 1 + 2 + 90 + 7 + 4 + 556 + 6 + 0 = 666.

It is a super-2 number, since 2×12907455660² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1180579 + ... + 1191461.

It is an arithmetic number, because the mean of its divisors is an integer number (297133200).

Almost surely, 2^12907455660 is an apocalyptic number.

12907455660 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 12907455660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21393590400).

12907455660 is an abundant number, since it is smaller than the sum of its proper divisors (29879725140).

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

12907455660 is a wasteful number, since it uses less digits than its factorization.

12907455660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11508 (or 11503 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 12907455660 in words is "twelve billion, nine hundred seven million, four hundred fifty-five thousand, six hundred sixty".