56785517440 has 32 divisors (see below), whose sum is σ = 135752879160. Its totient is φ = 22714206720.

The previous prime is 56785517419. The next prime is 56785517471. The reversal of 56785517440 is 4471558765.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44363046 + ... + 44364325.

Almost surely, 2^56785517440 is an apocalyptic number.

It is an amenable number.

56785517440 is an abundant number, since it is smaller than the sum of its proper divisors (78967361720).

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

56785517440 is an equidigital number, since it uses as much as digits as its factorization.

56785517440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88727390 (or 88727378 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 56785517440 in words is "fifty-six billion, seven hundred eighty-five million, five hundred seventeen thousand, four hundred forty".