56717504947 has 2 divisors, whose sum is σ = 56717504948. Its totient is φ = 56717504946.

The previous prime is 56717504917. The next prime is 56717504953. The reversal of 56717504947 is 74940571765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56717504947 - 2¹⁹ = 56716980659 is a prime.

It is not a weakly prime, because it can be changed into another prime (56717504917) 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, 28358752473 + 28358752474.

It is an arithmetic number, because the mean of its divisors is an integer number (28358752474).

Almost surely, 2^56717504947 is an apocalyptic number.

56717504947 is a deficient number, since it is larger than the sum of its proper divisors (1).

56717504947 is an equidigital number, since it uses as much as digits as its factorization.

56717504947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 56717504947 in words is "fifty-six billion, seven hundred seventeen million, five hundred four thousand, nine hundred forty-seven".