56667691598 has 12 divisors (see below), whose sum is σ = 98879339592. Its totient is φ = 24286153500.

The previous prime is 56667691573. The next prime is 56667691631. The reversal of 56667691598 is 89519676665.

It is a super-2 number, since 2×56667691598² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289120778 + ... + 289120973.

It is an arithmetic number, because the mean of its divisors is an integer number (8239944966).

Almost surely, 2^56667691598 is an apocalyptic number.

56667691598 is a deficient number, since it is larger than the sum of its proper divisors (42211647994).

56667691598 is a wasteful number, since it uses less digits than its factorization.

56667691598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578241767 (or 578241760 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 68.

The spelling of 56667691598 in words is "fifty-six billion, six hundred sixty-seven million, six hundred ninety-one thousand, five hundred ninety-eight".