56194878897 has 10 divisors (see below), whose sum is σ = 83945436498. Its totient is φ = 37463252544.

The previous prime is 56194878893. The next prime is 56194878917. The reversal of 56194878897 is 79887849165.

56194878897 is a `hidden beast` number, since 5 + 61 + 9 + 487 + 8 + 89 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54234957456 + 1959921441 = 232884^2 + 44271^2 .

It is not a de Polignac number, because 56194878897 - 2² = 56194878893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56194878893) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 346881888 + ... + 346882049.

Almost surely, 2^56194878897 is an apocalyptic number.

It is an amenable number.

56194878897 is a deficient number, since it is larger than the sum of its proper divisors (27750557601).

56194878897 is an equidigital number, since it uses as much as digits as its factorization.

56194878897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693763949 (or 693763940 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 72.

The spelling of 56194878897 in words is "fifty-six billion, one hundred ninety-four million, eight hundred seventy-eight thousand, eight hundred ninety-seven".