56326109521 has 4 divisors (see below), whose sum is σ = 61446664944. Its totient is φ = 51205554100.

The previous prime is 56326109491. The next prime is 56326109533. The reversal of 56326109521 is 12590162365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56326109521 - 2²⁵ = 56292555089 is a prime.

It is a super-2 number, since 2×56326109521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56326109551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560277695 + ... + 2560277716.

It is an arithmetic number, because the mean of its divisors is an integer number (15361666236).

Almost surely, 2^56326109521 is an apocalyptic number.

It is an amenable number.

56326109521 is a deficient number, since it is larger than the sum of its proper divisors (5120555423).

56326109521 is a wasteful number, since it uses less digits than its factorization.

56326109521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120555422.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 56326109521 in words is "fifty-six billion, three hundred twenty-six million, one hundred nine thousand, five hundred twenty-one".