56156162580 has 144 divisors (see below), whose sum is σ = 195298032384. Its totient is φ = 12794595840.

The previous prime is 56156162549. The next prime is 56156162597. The reversal of 56156162580 is 8526165165.

56156162580 is a `hidden beast` number, since 5 + 6 + 1 + 5 + 6 + 1 + 62 + 580 = 666.

It is a super-2 number, since 2×56156162580² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 323185 + ... + 465575.

It is an arithmetic number, because the mean of its divisors is an integer number (1356236336).

Almost surely, 2^56156162580 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 56156162580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97649016192).

56156162580 is an abundant number, since it is smaller than the sum of its proper divisors (139141869804).

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

56156162580 is a wasteful number, since it uses less digits than its factorization.

56156162580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142726 (or 142721 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 56156162580 in words is "fifty-six billion, one hundred fifty-six million, one hundred sixty-two thousand, five hundred eighty".