55638065131860 has 24 divisors (see below), whose sum is σ = 155786582369376. Its totient is φ = 14836817368480.

The previous prime is 55638065131843. The next prime is 55638065131871. The reversal of 55638065131860 is 6813156083655.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55638065131860.

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, 463650542706 + ... + 463650542825.

It is an arithmetic number, because the mean of its divisors is an integer number (6491107598724).

Almost surely, 2^{55638065131860} is an apocalyptic number.

It is an amenable number.

55638065131860 is an abundant number, since it is smaller than the sum of its proper divisors (100148517237516).

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

55638065131860 is a wasteful number, since it uses less digits than its factorization.

55638065131860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927301085543 (or 927301085541 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 55638065131860 in words is "fifty-five trillion, six hundred thirty-eight billion, sixty-five million, one hundred thirty-one thousand, eight hundred sixty".