55256380944 has 160 divisors (see below), whose sum is σ = 151740288000. Its totient is φ = 17278272000.

The previous prime is 55256380939. The next prime is 55256380961. The reversal of 55256380944 is 44908365255.

It is a happy number.

It is a super-2 number, since 2×55256380944² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45552882 + ... + 45554094.

It is an arithmetic number, because the mean of its divisors is an integer number (948376800).

Almost surely, 2^55256380944 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 55256380944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75870144000).

55256380944 is an abundant number, since it is smaller than the sum of its proper divisors (96483907056).

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

55256380944 is a wasteful number, since it uses less digits than its factorization.

55256380944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1687 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 55256380944 in words is "fifty-five billion, two hundred fifty-six million, three hundred eighty thousand, nine hundred forty-four".