56717520741756 has 144 divisors (see below), whose sum is σ = 167373567961600. Its totient is φ = 15859251999360.

The previous prime is 56717520741719. The next prime is 56717520741779. The reversal of 56717520741756 is 65714702571765.

It is a happy number.

56717520741756 is a `hidden beast` number, since 5 + 6 + 7 + 1 + 7 + 5 + 207 + 417 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 56717520741693 and 56717520741702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6211486 + ... + 12329541.

Almost surely, 2^{56717520741756} is an apocalyptic number.

It is an amenable number.

56717520741756 is an abundant number, since it is smaller than the sum of its proper divisors (110656047219844).

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

56717520741756 is a wasteful number, since it uses less digits than its factorization.

56717520741756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541304 (or 18541299 counting only the distinct ones).

The product of its (nonzero) digits is 86436000, while the sum is 63.

The spelling of 56717520741756 in words is "fifty-six trillion, seven hundred seventeen billion, five hundred twenty million, seven hundred forty-one thousand, seven hundred fifty-six".