55909174320 has 400 divisors, whose sum is σ = 206216176320. Its totient is φ = 13990330368.

The previous prime is 55909174319. The next prime is 55909174339. The reversal of 55909174320 is 2347190955.

It is a happy number.

55909174320 is a `hidden beast` number, since 5 + 590 + 9 + 17 + 43 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 55409976 + ... + 55410984.

Almost surely, 2^55909174320 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 55909174320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103108088160).

55909174320 is an abundant number, since it is smaller than the sum of its proper divisors (150307002000).

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

55909174320 is a wasteful number, since it uses less digits than its factorization.

55909174320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 55909174320 in words is "fifty-five billion, nine hundred nine million, one hundred seventy-four thousand, three hundred twenty".