998329735679 has 2 divisors, whose sum is σ = 998329735680. Its totient is φ = 998329735678.

The previous prime is 998329735631. The next prime is 998329735717. The reversal of 998329735679 is 976537923899.

It is a strong prime.

It is an emirp because it is prime and its reverse (976537923899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998329735679 is a prime.

It is a super-2 number, since 2×998329735679² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998329735609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499164867839 + 499164867840.

It is an arithmetic number, because the mean of its divisors is an integer number (499164867840).

Almost surely, 2^998329735679 is an apocalyptic number.

998329735679 is a deficient number, since it is larger than the sum of its proper divisors (1).

998329735679 is an equidigital number, since it uses as much as digits as its factorization.

998329735679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1388832480, while the sum is 77.

The spelling of 998329735679 in words is "nine hundred ninety-eight billion, three hundred twenty-nine million, seven hundred thirty-five thousand, six hundred seventy-nine".