56377404709 has 2 divisors, whose sum is σ = 56377404710. Its totient is φ = 56377404708.

The previous prime is 56377404653. The next prime is 56377404737. The reversal of 56377404709 is 90740477365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39782297025 + 16595107684 = 199455^2 + 128822^2 .

It is a cyclic number.

It is not a de Polignac number, because 56377404709 - 2¹⁷ = 56377273637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56377404779) 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, 28188702354 + 28188702355.

It is an arithmetic number, because the mean of its divisors is an integer number (28188702355).

Almost surely, 2^56377404709 is an apocalyptic number.

It is an amenable number.

56377404709 is a deficient number, since it is larger than the sum of its proper divisors (1).

56377404709 is an equidigital number, since it uses as much as digits as its factorization.

56377404709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 56377404709 in words is "fifty-six billion, three hundred seventy-seven million, four hundred four thousand, seven hundred nine".