10640856408 has 64 divisors (see below), whose sum is σ = 32741103360. Its totient is φ = 2806379136.

The previous prime is 10640856383. The next prime is 10640856433. The reversal of 10640856408 is 80465804601.

It is an interprime number because it is at equal distance from previous prime (10640856383) and next prime (10640856433).

It is a super-2 number, since 2×10640856408² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 10640856408.

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, 2433910 + ... + 2438277.

It is an arithmetic number, because the mean of its divisors is an integer number (511579740).

Almost surely, 2^10640856408 is an apocalyptic number.

It is an amenable number.

10640856408 is an abundant number, since it is smaller than the sum of its proper divisors (22100246952).

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

10640856408 is a wasteful number, since it uses less digits than its factorization.

10640856408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872216 (or 4872212 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 10640856408 in words is "ten billion, six hundred forty million, eight hundred fifty-six thousand, four hundred eight".