55256664156 has 48 divisors (see below), whose sum is σ = 132659009280. Its totient is φ = 17890449280.

The previous prime is 55256664137. The next prime is 55256664163. The reversal of 55256664156 is 65146665255.

It is a junction number, because it is equal to n+sod(n) for n = 55256664099 and 55256664108.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 135696 + ... + 359063.

It is an arithmetic number, because the mean of its divisors is an integer number (2763729360).

Almost surely, 2^55256664156 is an apocalyptic number.

It is an amenable number.

55256664156 is an abundant number, since it is smaller than the sum of its proper divisors (77402345124).

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

55256664156 is a wasteful number, since it uses less digits than its factorization.

55256664156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495034 (or 495032 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 51.

The spelling of 55256664156 in words is "fifty-five billion, two hundred fifty-six million, six hundred sixty-four thousand, one hundred fifty-six".