17331399979 has 2 divisors, whose sum is σ = 17331399980. Its totient is φ = 17331399978.

The previous prime is 17331399961. The next prime is 17331400027. The reversal of 17331399979 is 97999313371.

It is a weak prime.

It is an emirp because it is prime and its reverse (97999313371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17331399979 - 2¹³ = 17331391787 is a prime.

It is not a weakly prime, because it can be changed into another prime (17331379979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8665699989 + 8665699990.

It is an arithmetic number, because the mean of its divisors is an integer number (8665699990).

Almost surely, 2^17331399979 is an apocalyptic number.

17331399979 is a deficient number, since it is larger than the sum of its proper divisors (1).

17331399979 is an equidigital number, since it uses as much as digits as its factorization.

17331399979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8680203, while the sum is 61.

The spelling of 17331399979 in words is "seventeen billion, three hundred thirty-one million, three hundred ninety-nine thousand, nine hundred seventy-nine".