56655338181 has 48 divisors (see below), whose sum is σ = 82790064000. Its totient is φ = 34257292416.

The previous prime is 56655338161. The next prime is 56655338203. The reversal of 56655338181 is 18183355665.

It is not a de Polignac number, because 56655338181 - 2²² = 56651143877 is a prime.

It is a super-2 number, since 2×56655338181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56655338161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61648440 + ... + 61649358.

It is an arithmetic number, because the mean of its divisors is an integer number (1724793000).

Almost surely, 2^56655338181 is an apocalyptic number.

It is an amenable number.

56655338181 is a deficient number, since it is larger than the sum of its proper divisors (26134725819).

56655338181 is a wasteful number, since it uses less digits than its factorization.

56655338181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290 (or 1187 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 51.

The spelling of 56655338181 in words is "fifty-six billion, six hundred fifty-five million, three hundred thirty-eight thousand, one hundred eighty-one".