10656597840 has 80 divisors (see below), whose sum is σ = 37754809728. Its totient is φ = 2435793408.

The previous prime is 10656597827. The next prime is 10656597881. The reversal of 10656597840 is 4879565601.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×10656597840² (a number of 21 digits) contains 22 as substring.

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, 3169927 + ... + 3173286.

Almost surely, 2^10656597840 is an apocalyptic number.

10656597840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10656597840 is an abundant number, since it is smaller than the sum of its proper divisors (27098211888).

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

10656597840 is a wasteful number, since it uses less digits than its factorization.

10656597840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343236 (or 6343230 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 10656597840 in words is "ten billion, six hundred fifty-six million, five hundred ninety-seven thousand, eight hundred forty".