998364891311 has 2 divisors, whose sum is σ = 998364891312. Its totient is φ = 998364891310.

The previous prime is 998364891283. The next prime is 998364891317. The reversal of 998364891311 is 113198463899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998364891311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998364891317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499182445655 + 499182445656.

It is an arithmetic number, because the mean of its divisors is an integer number (499182445656).

Almost surely, 2^998364891311 is an apocalyptic number.

998364891311 is a deficient number, since it is larger than the sum of its proper divisors (1).

998364891311 is an equidigital number, since it uses as much as digits as its factorization.

998364891311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 62.

The spelling of 998364891311 in words is "nine hundred ninety-eight billion, three hundred sixty-four million, eight hundred ninety-one thousand, three hundred eleven".