55508903890388 has 48 divisors (see below), whose sum is σ = 104720480833920. Its totient is φ = 25593160650624.

The previous prime is 55508903890369. The next prime is 55508903890469. The reversal of 55508903890388 is 88309830980555.

It is a super-2 number, since 2×55508903890388² (a number of 28 digits) contains 22 as substring.

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, 694976831 + ... + 695056697.

It is an arithmetic number, because the mean of its divisors is an integer number (2181676684040).

Almost surely, 2^{55508903890388} is an apocalyptic number.

It is an amenable number.

55508903890388 is a deficient number, since it is larger than the sum of its proper divisors (49211576943532).

55508903890388 is a wasteful number, since it uses less digits than its factorization.

55508903890388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93456 (or 93454 counting only the distinct ones).

The product of its (nonzero) digits is 373248000, while the sum is 71.

The spelling of 55508903890388 in words is "fifty-five trillion, five hundred eight billion, nine hundred three million, eight hundred ninety thousand, three hundred eighty-eight".