56691819598 has 16 divisors (see below), whose sum is σ = 85500502560. Its totient is φ = 28191757216.

The previous prime is 56691819581. The next prime is 56691819631. The reversal of 56691819598 is 89591819665.

It is a congruent number.

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, 1121415 + ... + 1170877.

It is an arithmetic number, because the mean of its divisors is an integer number (5343781410).

Almost surely, 2^56691819598 is an apocalyptic number.

56691819598 is a deficient number, since it is larger than the sum of its proper divisors (28808682962).

56691819598 is a wasteful number, since it uses less digits than its factorization.

56691819598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52571.

The product of its digits is 41990400, while the sum is 67.

Adding to 56691819598 its sum of digits (67), we get a palindrome (56691819665).

The spelling of 56691819598 in words is "fifty-six billion, six hundred ninety-one million, eight hundred nineteen thousand, five hundred ninety-eight".