40656464423656 has 32 divisors (see below), whose sum is σ = 78779657825280. Its totient is φ = 19650051115200.

The previous prime is 40656464423621. The next prime is 40656464423699. The reversal of 40656464423656 is 65632446465604.

It is a junction number, because it is equal to n+sod(n) for n = 40656464423594 and 40656464423603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93247360 + ... + 93682351.

It is an arithmetic number, because the mean of its divisors is an integer number (2461864307040).

Almost surely, 2^{40656464423656} is an apocalyptic number.

It is an amenable number.

40656464423656 is a deficient number, since it is larger than the sum of its proper divisors (38123193401624).

40656464423656 is a wasteful number, since it uses less digits than its factorization.

40656464423656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186930625 (or 186930621 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 61.

The spelling of 40656464423656 in words is "forty trillion, six hundred fifty-six billion, four hundred sixty-four million, four hundred twenty-three thousand, six hundred fifty-six".