55365913512 has 384 divisors, whose sum is σ = 198803404800. Its totient is φ = 13510457856.

The previous prime is 55365913511. The next prime is 55365913717. The reversal of 55365913512 is 21531956355.

55365913512 is a `hidden beast` number, since 5 + 5 + 3 + 6 + 591 + 3 + 51 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (55365913511) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5347813 + ... + 5358155.

It is an arithmetic number, because the mean of its divisors is an integer number (517717200).

Almost surely, 2^55365913512 is an apocalyptic number.

55365913512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55365913512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99401702400).

55365913512 is an abundant number, since it is smaller than the sum of its proper divisors (143437491288).

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

55365913512 is a wasteful number, since it uses less digits than its factorization.

55365913512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10437 (or 10430 counting only the distinct ones).

The product of its digits is 607500, while the sum is 45.

The spelling of 55365913512 in words is "fifty-five billion, three hundred sixty-five million, nine hundred thirteen thousand, five hundred twelve".