56787146556 has 96 divisors (see below), whose sum is σ = 158766440448. Its totient is φ = 15445805760.

The previous prime is 56787146513. The next prime is 56787146617. The reversal of 56787146556 is 65564178765.

It is a happy number.

It is a super-2 number, since 2×56787146556² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56787146556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338001 + ... + 477303.

It is an arithmetic number, because the mean of its divisors is an integer number (1653817088).

Almost surely, 2^56787146556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56787146556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79383220224).

56787146556 is an abundant number, since it is smaller than the sum of its proper divisors (101979293892).

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

56787146556 is a wasteful number, since it uses less digits than its factorization.

56787146556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139551 (or 139549 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 60.

The spelling of 56787146556 in words is "fifty-six billion, seven hundred eighty-seven million, one hundred forty-six thousand, five hundred fifty-six".