716457611509 has 2 divisors, whose sum is σ = 716457611510. Its totient is φ = 716457611508.

The previous prime is 716457611483. The next prime is 716457611557. The reversal of 716457611509 is 905116754617.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518896919025 + 197560692484 = 720345^2 + 444478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716457611509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (716457611609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358228805754 + 358228805755.

It is an arithmetic number, because the mean of its divisors is an integer number (358228805755).

Almost surely, 2^716457611509 is an apocalyptic number.

It is an amenable number.

716457611509 is a deficient number, since it is larger than the sum of its proper divisors (1).

716457611509 is an equidigital number, since it uses as much as digits as its factorization.

716457611509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 52.

The spelling of 716457611509 in words is "seven hundred sixteen billion, four hundred fifty-seven million, six hundred eleven thousand, five hundred nine".