55139020470 has 48 divisors (see below), whose sum is σ = 144839429280. Its totient is φ = 14552151552.

The previous prime is 55139020459. The next prime is 55139020483. The reversal of 55139020470 is 7402093155.

55139020470 is a `hidden beast` number, since 55 + 139 + 0 + 2 + 0 + 470 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3149290 + ... + 3166749.

It is an arithmetic number, because the mean of its divisors is an integer number (3017488110).

Almost surely, 2^55139020470 is an apocalyptic number.

55139020470 is an abundant number, since it is smaller than the sum of its proper divisors (89700408810).

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

55139020470 is a wasteful number, since it uses less digits than its factorization.

55139020470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316149 (or 6316146 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 55139020470 in words is "fifty-five billion, one hundred thirty-nine million, twenty thousand, four hundred seventy".