55709720271 has 8 divisors (see below), whose sum is σ = 82532918960. Its totient is φ = 37139813496.

The previous prime is 55709720251. The next prime is 55709720323. The reversal of 55709720271 is 17202790755.

55709720271 is a `hidden beast` number, since 5 + 570 + 9 + 7 + 2 + 0 + 2 + 71 = 666.

It is not a de Polignac number, because 55709720271 - 2³⁵ = 21349981903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55709720251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031661460 + ... + 1031661513.

It is an arithmetic number, because the mean of its divisors is an integer number (10316614870).

Almost surely, 2^55709720271 is an apocalyptic number.

55709720271 is a deficient number, since it is larger than the sum of its proper divisors (26823198689).

55709720271 is a wasteful number, since it uses less digits than its factorization.

55709720271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063322982 (or 2063322976 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The spelling of 55709720271 in words is "fifty-five billion, seven hundred nine million, seven hundred twenty thousand, two hundred seventy-one".