55720675128 has 64 divisors (see below), whose sum is σ = 146678601600. Its totient is φ = 17590573440.

The previous prime is 55720675117. The next prime is 55720675133. The reversal of 55720675128 is 82157602755.

55720675128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1615875 + ... + 1649997.

It is an arithmetic number, because the mean of its divisors is an integer number (2291853150).

Almost surely, 2^55720675128 is an apocalyptic number.

It is an amenable number.

55720675128 is an abundant number, since it is smaller than the sum of its proper divisors (90957926472).

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

55720675128 is a wasteful number, since it uses less digits than its factorization.

55720675128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37732 (or 37728 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 55720675128 in words is "fifty-five billion, seven hundred twenty million, six hundred seventy-five thousand, one hundred twenty-eight".