56326549591 has 32 divisors (see below), whose sum is σ = 64122347520. Its totient is φ = 49088582400.

The previous prime is 56326549589. The next prime is 56326549597. The reversal of 56326549591 is 19594562365.

It is not a de Polignac number, because 56326549591 - 2¹ = 56326549589 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 (56326549597) 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 31 ways as a sum of consecutive naturals, for example, 7477515 + ... + 7485043.

It is an arithmetic number, because the mean of its divisors is an integer number (2003823360).

Almost surely, 2^56326549591 is an apocalyptic number.

56326549591 is a deficient number, since it is larger than the sum of its proper divisors (7795797929).

56326549591 is a wasteful number, since it uses less digits than its factorization.

56326549591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7887.

The product of its digits is 8748000, while the sum is 55.

The spelling of 56326549591 in words is "fifty-six billion, three hundred twenty-six million, five hundred forty-nine thousand, five hundred ninety-one".