56606157689 has 2 divisors, whose sum is σ = 56606157690. Its totient is φ = 56606157688.

The previous prime is 56606157649. The next prime is 56606157701. The reversal of 56606157689 is 98675160665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48790183225 + 7815974464 = 220885^2 + 88408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56606157689 is a prime.

It is not a weakly prime, because it can be changed into another prime (56606157649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28303078844 + 28303078845.

It is an arithmetic number, because the mean of its divisors is an integer number (28303078845).

Almost surely, 2^56606157689 is an apocalyptic number.

It is an amenable number.

56606157689 is a deficient number, since it is larger than the sum of its proper divisors (1).

56606157689 is an equidigital number, since it uses as much as digits as its factorization.

56606157689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 56606157689 in words is "fifty-six billion, six hundred six million, one hundred fifty-seven thousand, six hundred eighty-nine".