56108129940 has 36 divisors (see below), whose sum is σ = 170194661364. Its totient is φ = 14962167936.

The previous prime is 56108129851. The next prime is 56108129963. The reversal of 56108129940 is 4992180165.

56108129940 is a `hidden beast` number, since 5 + 610 + 8 + 1 + 29 + 9 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18849093264 + 37259036676 = 137292^2 + 193026^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 155855737 + ... + 155856096.

Almost surely, 2^56108129940 is an apocalyptic number.

It is an amenable number.

56108129940 is an abundant number, since it is smaller than the sum of its proper divisors (114086531424).

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

56108129940 is a wasteful number, since it uses less digits than its factorization.

56108129940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311711848 (or 311711843 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 56108129940 in words is "fifty-six billion, one hundred eight million, one hundred twenty-nine thousand, nine hundred forty".