998218352059 has 2 divisors, whose sum is σ = 998218352060. Its totient is φ = 998218352058.

The previous prime is 998218351859. The next prime is 998218352077. The reversal of 998218352059 is 950253812899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998218352059 - 2¹³ = 998218343867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998218351988 and 998218352006.

It is not a weakly prime, because it can be changed into another prime (998218352099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499109176029 + 499109176030.

It is an arithmetic number, because the mean of its divisors is an integer number (499109176030).

Almost surely, 2^998218352059 is an apocalyptic number.

998218352059 is a deficient number, since it is larger than the sum of its proper divisors (1).

998218352059 is an equidigital number, since it uses as much as digits as its factorization.

998218352059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 998218352059 in words is "nine hundred ninety-eight billion, two hundred eighteen million, three hundred fifty-two thousand, fifty-nine".