56533320440 has 32 divisors (see below), whose sum is σ = 127210690080. Its totient is φ = 22611422592.

The previous prime is 56533320439. The next prime is 56533320451. The reversal of 56533320440 is 4402333565.

It is a self number, because there is not a number n which added to its sum of digits gives 56533320440.

It is a congruent number.

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, 481814 + ... + 587546.

It is an arithmetic number, because the mean of its divisors is an integer number (3975334065).

Almost surely, 2^56533320440 is an apocalyptic number.

It is an amenable number.

56533320440 is an abundant number, since it is smaller than the sum of its proper divisors (70677369640).

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

56533320440 is a wasteful number, since it uses less digits than its factorization.

56533320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119111 (or 119107 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 56533320440 in words is "fifty-six billion, five hundred thirty-three million, three hundred twenty thousand, four hundred forty".