56991193298 has 16 divisors (see below), whose sum is σ = 95237273880. Its totient is φ = 25396605696.

The previous prime is 56991193283. The next prime is 56991193309. The reversal of 56991193298 is 89239119965.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18538728649 + 38452464649 = 136157^2 + 196093^2 .

It is a super-2 number, since 2×56991193298² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56991193298.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37791815 + ... + 37793322.

Almost surely, 2^56991193298 is an apocalyptic number.

56991193298 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

56991193298 is a deficient number, since it is larger than the sum of its proper divisors (38246080582).

56991193298 is a wasteful number, since it uses less digits than its factorization.

56991193298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75585181.

The product of its digits is 9447840, while the sum is 62.

The spelling of 56991193298 in words is "fifty-six billion, nine hundred ninety-one million, one hundred ninety-three thousand, two hundred ninety-eight".