55155720735684 has 48 divisors (see below), whose sum is σ = 143527897900800. Its totient is φ = 18316893617568.

The previous prime is 55155720735679. The next prime is 55155720735727. The reversal of 55155720735684 is 48653702755155.

55155720735684 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 572 + 0 + 7 + 3 + 56 + 8 + 4 = 666.

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, 949229532 + ... + 949287635.

It is an arithmetic number, because the mean of its divisors is an integer number (2990164539600).

Almost surely, 2^{55155720735684} is an apocalyptic number.

55155720735684 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55155720735684 is an abundant number, since it is smaller than the sum of its proper divisors (88372177165116).

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

55155720735684 is a wasteful number, since it uses less digits than its factorization.

55155720735684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898517449 (or 1898517441 counting only the distinct ones).

The product of its (nonzero) digits is 176400000, while the sum is 63.

The spelling of 55155720735684 in words is "fifty-five trillion, one hundred fifty-five billion, seven hundred twenty million, seven hundred thirty-five thousand, six hundred eighty-four".