56810108869 has 4 divisors (see below), whose sum is σ = 57494568096. Its totient is φ = 56125649644.

The previous prime is 56810108833. The next prime is 56810108893. The reversal of 56810108869 is 96880101865.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96880101865 = 5 ⋅19376020373.

It is a cyclic number.

It is not a de Polignac number, because 56810108869 - 2²⁹ = 56273237957 is a prime.

It is a super-2 number, since 2×56810108869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56810108899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342229489 + ... + 342229654.

It is an arithmetic number, because the mean of its divisors is an integer number (14373642024).

Almost surely, 2^56810108869 is an apocalyptic number.

It is an amenable number.

56810108869 is a deficient number, since it is larger than the sum of its proper divisors (684459227).

56810108869 is an equidigital number, since it uses as much as digits as its factorization.

56810108869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684459226.

The product of its (nonzero) digits is 829440, while the sum is 52.

The spelling of 56810108869 in words is "fifty-six billion, eight hundred ten million, one hundred eight thousand, eight hundred sixty-nine".