55638534415188 has 24 divisors (see below), whose sum is σ = 134011093646080. Its totient is φ = 17947914327360.

The previous prime is 55638534415117. The next prime is 55638534415223. The reversal of 55638534415188 is 88151443583655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74782975993 + ... + 74782976736.

Almost surely, 2^{55638534415188} is an apocalyptic number.

It is an amenable number.

55638534415188 is an abundant number, since it is smaller than the sum of its proper divisors (78372559230892).

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

55638534415188 is a wasteful number, since it uses less digits than its factorization.

55638534415188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149565952767 (or 149565952765 counting only the distinct ones).

The product of its digits is 276480000, while the sum is 66.

The spelling of 55638534415188 in words is "fifty-five trillion, six hundred thirty-eight billion, five hundred thirty-four million, four hundred fifteen thousand, one hundred eighty-eight".