998658495599 has 2 divisors, whose sum is σ = 998658495600. Its totient is φ = 998658495598.

The previous prime is 998658495557. The next prime is 998658495617. The reversal of 998658495599 is 995594856899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998658495599 - 2²⁴ = 998641718383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998658495599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998658495529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499329247799 + 499329247800.

It is an arithmetic number, because the mean of its divisors is an integer number (499329247800).

Almost surely, 2^998658495599 is an apocalyptic number.

998658495599 is a deficient number, since it is larger than the sum of its proper divisors (1).

998658495599 is an equidigital number, since it uses as much as digits as its factorization.

998658495599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11337408000, while the sum is 86.

The spelling of 998658495599 in words is "nine hundred ninety-eight billion, six hundred fifty-eight million, four hundred ninety-five thousand, five hundred ninety-nine".