715231665569 has 2 divisors, whose sum is σ = 715231665570. Its totient is φ = 715231665568.

The previous prime is 715231665563. The next prime is 715231665581. The reversal of 715231665569 is 965566132517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542707735969 + 172523929600 = 736687^2 + 415360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715231665569 is a prime.

It is a super-2 number, since 2×715231665569² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (715231665563) 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, 357615832784 + 357615832785.

It is an arithmetic number, because the mean of its divisors is an integer number (357615832785).

Almost surely, 2^715231665569 is an apocalyptic number.

It is an amenable number.

715231665569 is a deficient number, since it is larger than the sum of its proper divisors (1).

715231665569 is an equidigital number, since it uses as much as digits as its factorization.

715231665569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206000, while the sum is 56.

The spelling of 715231665569 in words is "seven hundred fifteen billion, two hundred thirty-one million, six hundred sixty-five thousand, five hundred sixty-nine".