56688322729 has 2 divisors, whose sum is σ = 56688322730. Its totient is φ = 56688322728.

The previous prime is 56688322703. The next prime is 56688322739. The reversal of 56688322729 is 92722388665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44499058704 + 12189264025 = 210948^2 + 110405^2 .

It is a cyclic number.

It is not a de Polignac number, because 56688322729 - 2¹³ = 56688314537 is a prime.

It is not a weakly prime, because it can be changed into another prime (56688322739) by changing a digit.

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 as a sum of consecutive naturals, namely, 28344161364 + 28344161365.

It is an arithmetic number, because the mean of its divisors is an integer number (28344161365).

Almost surely, 2^56688322729 is an apocalyptic number.

It is an amenable number.

56688322729 is a deficient number, since it is larger than the sum of its proper divisors (1).

56688322729 is an equidigital number, since it uses as much as digits as its factorization.

56688322729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 58.

The spelling of 56688322729 in words is "fifty-six billion, six hundred eighty-eight million, three hundred twenty-two thousand, seven hundred twenty-nine".