56117228390 has 32 divisors (see below), whose sum is σ = 102989123136. Its totient is φ = 22007905920.

The previous prime is 56117228357. The next prime is 56117228393. The reversal of 56117228390 is 9382271165.

56117228390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56117228393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733655 + ... + 806525.

It is an arithmetic number, because the mean of its divisors is an integer number (3218410098).

Almost surely, 2^56117228390 is an apocalyptic number.

56117228390 is a deficient number, since it is larger than the sum of its proper divisors (46871894746).

56117228390 is a wasteful number, since it uses less digits than its factorization.

56117228390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74384.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 56117228390 in words is "fifty-six billion, one hundred seventeen million, two hundred twenty-eight thousand, three hundred ninety".