709665860977919 has 2 divisors, whose sum is σ = 709665860977920. Its totient is φ = 709665860977918.

The previous prime is 709665860977907. The next prime is 709665860977943. The reversal of 709665860977919 is 919779068566907.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-709665860977919 is a prime.

It is a super-2 number, since 2×709665860977919² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709665860977319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354832930488959 + 354832930488960.

It is an arithmetic number, because the mean of its divisors is an integer number (354832930488960).

Almost surely, 2^{709665860977919} is an apocalyptic number.

709665860977919 is a deficient number, since it is larger than the sum of its proper divisors (1).

709665860977919 is an equidigital number, since it uses as much as digits as its factorization.

709665860977919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19443654720, while the sum is 89.

The spelling of 709665860977919 in words is "seven hundred nine trillion, six hundred sixty-five billion, eight hundred sixty million, nine hundred seventy-seven thousand, nine hundred nineteen".