55391473312 has 48 divisors (see below), whose sum is σ = 125527510080. Its totient is φ = 23568403968.

The previous prime is 55391473307. The next prime is 55391473331. The reversal of 55391473312 is 21337419355.

55391473312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 858373 + ... + 920644.

It is an arithmetic number, because the mean of its divisors is an integer number (2615156460).

Almost surely, 2^55391473312 is an apocalyptic number.

It is an amenable number.

55391473312 is an abundant number, since it is smaller than the sum of its proper divisors (70136036768).

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

55391473312 is a wasteful number, since it uses less digits than its factorization.

55391473312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779173 (or 1779165 counting only the distinct ones).

The product of its digits is 340200, while the sum is 43.

The spelling of 55391473312 in words is "fifty-five billion, three hundred ninety-one million, four hundred seventy-three thousand, three hundred twelve".