709431218099 has 2 divisors, whose sum is σ = 709431218100. Its totient is φ = 709431218098.

The previous prime is 709431218051. The next prime is 709431218123. The reversal of 709431218099 is 990812134907.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 709431218099 - 2⁸ = 709431217843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 709431218099.

It is not a weakly prime, because it can be changed into another prime (709431218299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354715609049 + 354715609050.

It is an arithmetic number, because the mean of its divisors is an integer number (354715609050).

Almost surely, 2^709431218099 is an apocalyptic number.

709431218099 is a deficient number, since it is larger than the sum of its proper divisors (1).

709431218099 is an equidigital number, since it uses as much as digits as its factorization.

709431218099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 709431218099 in words is "seven hundred nine billion, four hundred thirty-one million, two hundred eighteen thousand, ninety-nine".