56554866845565 has 192 divisors, whose sum is σ = 107789156697600. Its totient is φ = 25232672931840.

The previous prime is 56554866845557. The next prime is 56554866845671.

56554866845565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56554866845565 - 2³ = 56554866845557 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 137260581 + ... + 137671989.

It is an arithmetic number, because the mean of its divisors is an integer number (561401857800).

Almost surely, 2^{56554866845565} is an apocalyptic number.

56554866845565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56554866845565 is a deficient number, since it is larger than the sum of its proper divisors (51234289852035).

56554866845565 is a wasteful number, since it uses less digits than its factorization.

56554866845565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411588 (or 411577 counting only the distinct ones).

The product of its digits is 20736000000, while the sum is 78.

The spelling of 56554866845565 in words is "fifty-six trillion, five hundred fifty-four billion, eight hundred sixty-six million, eight hundred forty-five thousand, five hundred sixty-five".