56144019980 has 24 divisors (see below), whose sum is σ = 124107834480. Its totient is φ = 21275628480.

The previous prime is 56144019979. The next prime is 56144020003. The reversal of 56144019980 is 8991044165.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73873331 + ... + 73874090.

It is an arithmetic number, because the mean of its divisors is an integer number (5171159770).

Almost surely, 2^56144019980 is an apocalyptic number.

It is an amenable number.

56144019980 is an abundant number, since it is smaller than the sum of its proper divisors (67963814500).

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

56144019980 is a wasteful number, since it uses less digits than its factorization.

56144019980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147747449 (or 147747447 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 56144019980 in words is "fifty-six billion, one hundred forty-four million, nineteen thousand, nine hundred eighty".