56552173638 has 32 divisors (see below), whose sum is σ = 113362295904. Its totient is φ = 18807785472.

The previous prime is 56552173627. The next prime is 56552173663. The reversal of 56552173638 is 83637125565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5018106 + ... + 5029362.

It is an arithmetic number, because the mean of its divisors is an integer number (3542571747).

Almost surely, 2^56552173638 is an apocalyptic number.

56552173638 is an abundant number, since it is smaller than the sum of its proper divisors (56810122266).

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

56552173638 is a wasteful number, since it uses less digits than its factorization.

56552173638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13096.

The product of its digits is 4536000, while the sum is 51.

The spelling of 56552173638 in words is "fifty-six billion, five hundred fifty-two million, one hundred seventy-three thousand, six hundred thirty-eight".