56689926901 has 2 divisors, whose sum is σ = 56689926902. Its totient is φ = 56689926900.

The previous prime is 56689926883. The next prime is 56689926949. The reversal of 56689926901 is 10962998665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39620504401 + 17069422500 = 199049^2 + 130650^2 .

It is a cyclic number.

It is not a de Polignac number, because 56689926901 - 2⁷ = 56689926773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56689926901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56689926101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28344963450 + 28344963451.

It is an arithmetic number, because the mean of its divisors is an integer number (28344963451).

Almost surely, 2^56689926901 is an apocalyptic number.

It is an amenable number.

56689926901 is a deficient number, since it is larger than the sum of its proper divisors (1).

56689926901 is an equidigital number, since it uses as much as digits as its factorization.

56689926901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 56689926901 in words is "fifty-six billion, six hundred eighty-nine million, nine hundred twenty-six thousand, nine hundred one".