56991668594683 has 2 divisors, whose sum is σ = 56991668594684. Its totient is φ = 56991668594682.

The previous prime is 56991668594669. The next prime is 56991668594771. The reversal of 56991668594683 is 38649586619965.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56991668594683 - 2³³ = 56983078660091 is a prime.

It is a super-2 number, since 2×56991668594683² (a number of 28 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 56991668594683.

It is not a weakly prime, because it can be changed into another prime (56991668594983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28495834297341 + 28495834297342.

It is an arithmetic number, because the mean of its divisors is an integer number (28495834297342).

Almost surely, 2^{56991668594683} is an apocalyptic number.

56991668594683 is a deficient number, since it is larger than the sum of its proper divisors (1).

56991668594683 is an equidigital number, since it uses as much as digits as its factorization.

56991668594683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18139852800, while the sum is 85.

The spelling of 56991668594683 in words is "fifty-six trillion, nine hundred ninety-one billion, six hundred sixty-eight million, five hundred ninety-four thousand, six hundred eighty-three".