998557832474933 has 2 divisors, whose sum is σ = 998557832474934. Its totient is φ = 998557832474932.

The previous prime is 998557832474927. The next prime is 998557832475001. The reversal of 998557832474933 is 339474238755899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996878198330884 + 1679634144049 = 31573378^2 + 1296007^2 .

It is a cyclic number.

It is not a de Polignac number, because 998557832474933 - 2¹² = 998557832470837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998557832474533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499278916237466 + 499278916237467.

It is an arithmetic number, because the mean of its divisors is an integer number (499278916237467).

Almost surely, 2^{998557832474933} is an apocalyptic number.

It is an amenable number.

998557832474933 is a deficient number, since it is larger than the sum of its proper divisors (1).

998557832474933 is an equidigital number, since it uses as much as digits as its factorization.

998557832474933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49380710400, while the sum is 86.

The spelling of 998557832474933 in words is "nine hundred ninety-eight trillion, five hundred fifty-seven billion, eight hundred thirty-two million, four hundred seventy-four thousand, nine hundred thirty-three".