401764069656 has 64 divisors (see below), whose sum is σ = 1181659039200. Its totient is φ = 126043628544.

The previous prime is 401764069633. The next prime is 401764069703. The reversal of 401764069656 is 656960467104.

401764069656 is a `hidden beast` number, since 4 + 0 + 176 + 406 + 9 + 65 + 6 = 666.

It is a super-2 number, since 2×401764069656² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 54702765 + ... + 54710108.

Almost surely, 2^401764069656 is an apocalyptic number.

It is an amenable number.

401764069656 is an abundant number, since it is smaller than the sum of its proper divisors (779894969544).

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

401764069656 is a wasteful number, since it uses less digits than its factorization.

401764069656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109412905 (or 109412895 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 401764069656 in words is "four hundred one billion, seven hundred sixty-four million, sixty-nine thousand, six hundred fifty-six".