56464808191 has 4 divisors (see below), whose sum is σ = 61597972584. Its totient is φ = 51331643800.

The previous prime is 56464808143. The next prime is 56464808243. The reversal of 56464808191 is 19180846465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56464808191 - 2¹⁷ = 56464677119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56464808891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2566582180 + ... + 2566582201.

It is an arithmetic number, because the mean of its divisors is an integer number (15399493146).

Almost surely, 2^56464808191 is an apocalyptic number.

56464808191 is a deficient number, since it is larger than the sum of its proper divisors (5133164393).

56464808191 is a wasteful number, since it uses less digits than its factorization.

56464808191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133164392.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 56464808191 in words is "fifty-six billion, four hundred sixty-four million, eight hundred eight thousand, one hundred ninety-one".