55670509931 has 24 divisors (see below), whose sum is σ = 57973008240. Its totient is φ = 53456578560.

The previous prime is 55670509927. The next prime is 55670509957. The reversal of 55670509931 is 13990507655.

It is not a de Polignac number, because 55670509931 - 2² = 55670509927 is a prime.

It is a super-2 number, since 2×55670509931² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55670509931.

It is not an unprimeable number, because it can be changed into a prime (55670509901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128569091 + ... + 128569523.

It is an arithmetic number, because the mean of its divisors is an integer number (2415542010).

Almost surely, 2^55670509931 is an apocalyptic number.

55670509931 is a deficient number, since it is larger than the sum of its proper divisors (2302498309).

55670509931 is a wasteful number, since it uses less digits than its factorization.

55670509931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 1275750, while the sum is 50.

The spelling of 55670509931 in words is "fifty-five billion, six hundred seventy million, five hundred nine thousand, nine hundred thirty-one".