56565311556450 has 144 divisors (see below), whose sum is σ = 142684344099648. Its totient is φ = 14830044768000.

The previous prime is 56565311556421. The next prime is 56565311556491. The reversal of 56565311556450 is 5465511356565.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1289862724 + ... + 1289906576.

It is an arithmetic number, because the mean of its divisors is an integer number (990863500692).

Almost surely, 2^{56565311556450} is an apocalyptic number.

56565311556450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56565311556450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71342172049824).

56565311556450 is an abundant number, since it is smaller than the sum of its proper divisors (86119032543198).

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

56565311556450 is a wasteful number, since it uses less digits than its factorization.

56565311556450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46301 (or 46235 counting only the distinct ones).

The product of its (nonzero) digits is 40500000, while the sum is 57.

The spelling of 56565311556450 in words is "fifty-six trillion, five hundred sixty-five billion, three hundred eleven million, five hundred fifty-six thousand, four hundred fifty".