56463615869 has 4 divisors (see below), whose sum is σ = 56492235996. Its totient is φ = 56434995744.

The previous prime is 56463615851. The next prime is 56463615889. The reversal of 56463615869 is 96851636465.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31095090244 + 25368525625 = 176338^2 + 159275^2 .

It is a cyclic number.

It is not a de Polignac number, because 56463615869 - 2¹² = 56463611773 is a prime.

It is a super-2 number, since 2×56463615869² (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 (56463615809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14307104 + ... + 14311049.

It is an arithmetic number, because the mean of its divisors is an integer number (14123058999).

Almost surely, 2^56463615869 is an apocalyptic number.

It is an amenable number.

56463615869 is a deficient number, since it is larger than the sum of its proper divisors (28620127).

56463615869 is a wasteful number, since it uses less digits than its factorization.

56463615869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28620126.

The product of its digits is 27993600, while the sum is 59.

The spelling of 56463615869 in words is "fifty-six billion, four hundred sixty-three million, six hundred fifteen thousand, eight hundred sixty-nine".