56420165980 has 24 divisors (see below), whose sum is σ = 124718262480. Its totient is φ = 21380273280.

The previous prime is 56420165957. The next prime is 56420166017. The reversal of 56420165980 is 8956102465.

It is a self number, because there is not a number n which added to its sum of digits gives 56420165980.

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 7 ways as a sum of consecutive naturals, for example, 74236681 + ... + 74237440.

It is an arithmetic number, because the mean of its divisors is an integer number (5196594270).

Almost surely, 2^56420165980 is an apocalyptic number.

It is an amenable number.

56420165980 is an abundant number, since it is smaller than the sum of its proper divisors (68298096500).

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

56420165980 is a wasteful number, since it uses less digits than its factorization.

56420165980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148474149 (or 148474147 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 56420165980 in words is "fifty-six billion, four hundred twenty million, one hundred sixty-five thousand, nine hundred eighty".