56919446640 has 180 divisors, whose sum is σ = 222363506664. Its totient is φ = 13010151168.

The previous prime is 56919446629. The next prime is 56919446653. The reversal of 56919446640 is 4664491965.

56919446640 is a `hidden beast` number, since 5 + 6 + 91 + 94 + 466 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 771402 + ... + 841961.

Almost surely, 2^56919446640 is an apocalyptic number.

It is an amenable number.

56919446640 is an abundant number, since it is smaller than the sum of its proper divisors (165444060024).

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

56919446640 is a wasteful number, since it uses less digits than its factorization.

56919446640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613396 (or 1613380 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 56919446640 in words is "fifty-six billion, nine hundred nineteen million, four hundred forty-six thousand, six hundred forty".