55375011920 has 20 divisors (see below), whose sum is σ = 128746902900. Its totient is φ = 22150004736.

The previous prime is 55375011919. The next prime is 55375011971. The reversal of 55375011920 is 2911057355.

It can be written as a sum of positive squares in 2 ways, for example, as 36421432336 + 18953579584 = 190844^2 + 137672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346093745 + ... + 346093904.

It is an arithmetic number, because the mean of its divisors is an integer number (6437345145).

Almost surely, 2^55375011920 is an apocalyptic number.

It is an amenable number.

55375011920 is an abundant number, since it is smaller than the sum of its proper divisors (73371890980).

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

55375011920 is a wasteful number, since it uses less digits than its factorization.

55375011920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692187662 (or 692187656 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 38.

The spelling of 55375011920 in words is "fifty-five billion, three hundred seventy-five million, eleven thousand, nine hundred twenty".