56500810565 has 8 divisors (see below), whose sum is σ = 68145141240. Its totient is φ = 44971202752.

The previous prime is 56500810559. The next prime is 56500810567. The reversal of 56500810565 is 56501800565.

It can be written as a sum of positive squares in 4 ways, for example, as 33952484644 + 22548325921 = 184262^2 + 150161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56500810565 - 2⁶ = 56500810501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56500810567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28679630 + ... + 28681599.

It is an arithmetic number, because the mean of its divisors is an integer number (8518142655).

Almost surely, 2^56500810565 is an apocalyptic number.

It is an amenable number.

56500810565 is a deficient number, since it is larger than the sum of its proper divisors (11644330675).

56500810565 is a wasteful number, since it uses less digits than its factorization.

56500810565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57361431.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 56500810565 in words is "fifty-six billion, five hundred million, eight hundred ten thousand, five hundred sixty-five".