56178615636 has 360 divisors, whose sum is σ = 182653178400. Its totient is φ = 14884197120.

The previous prime is 56178615629. The next prime is 56178615709. The reversal of 56178615636 is 63651687165.

56178615636 is a `hidden beast` number, since 5 + 6 + 1 + 78 + 6 + 1 + 563 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 11441550 + ... + 11446458.

It is an arithmetic number, because the mean of its divisors is an integer number (507369940).

Almost surely, 2^56178615636 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 56178615636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91326589200).

56178615636 is an abundant number, since it is smaller than the sum of its proper divisors (126474562764).

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

56178615636 is a wasteful number, since it uses less digits than its factorization.

56178615636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4981 (or 4957 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 56178615636 in words is "fifty-six billion, one hundred seventy-eight million, six hundred fifteen thousand, six hundred thirty-six".