55638477432368 has 40 divisors (see below), whose sum is σ = 109535277293568. Its totient is φ = 27372271367232.

The previous prime is 55638477432331. The next prime is 55638477432371. The reversal of 55638477432368 is 86323477483655.

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, 29145296 + ... + 30995567.

Almost surely, 2^{55638477432368} is an apocalyptic number.

It is an amenable number.

55638477432368 is a deficient number, since it is larger than the sum of its proper divisors (53896799861200).

55638477432368 is a wasteful number, since it uses less digits than its factorization.

55638477432368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60141801 (or 60141795 counting only the distinct ones).

The product of its digits is 2438553600, while the sum is 71.

The spelling of 55638477432368 in words is "fifty-five trillion, six hundred thirty-eight billion, four hundred seventy-seven million, four hundred thirty-two thousand, three hundred sixty-eight".