13056640660 has 48 divisors (see below), whose sum is σ = 32182867584. Its totient is φ = 4355572608.

The previous prime is 13056640633. The next prime is 13056640687. The reversal of 13056640660 is 6604665031.

It is an interprime number because it is at equal distance from previous prime (13056640633) and next prime (13056640687).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

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, 1255114 + ... + 1265473.

It is an arithmetic number, because the mean of its divisors is an integer number (670476408).

Almost surely, 2^13056640660 is an apocalyptic number.

13056640660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13056640660 is an abundant number, since it is smaller than the sum of its proper divisors (19126226924).

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

13056640660 is a wasteful number, since it uses less digits than its factorization.

13056640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520640 (or 2520638 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 13056640660 in words is "thirteen billion, fifty-six million, six hundred forty thousand, six hundred sixty".