55091319504 has 80 divisors (see below), whose sum is σ = 153386765952. Its totient is φ = 16937915904.

The previous prime is 55091319487. The next prime is 55091319529. The reversal of 55091319504 is 40591319055.

55091319504 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, 779194 + ... + 846950.

Almost surely, 2^55091319504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55091319504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76693382976).

55091319504 is an abundant number, since it is smaller than the sum of its proper divisors (98295446448).

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

55091319504 is a wasteful number, since it uses less digits than its factorization.

55091319504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69084 (or 69078 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 42.

The spelling of 55091319504 in words is "fifty-five billion, ninety-one million, three hundred nineteen thousand, five hundred four".