33198989443 has 2 divisors, whose sum is σ = 33198989444. Its totient is φ = 33198989442.

The previous prime is 33198989413. The next prime is 33198989449. The reversal of 33198989443 is 34498989133.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33198989443 is a prime.

It is a super-2 number, since 2×33198989443² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33198989449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16599494721 + 16599494722.

It is an arithmetic number, because the mean of its divisors is an integer number (16599494722).

Almost surely, 2^33198989443 is an apocalyptic number.

33198989443 is a deficient number, since it is larger than the sum of its proper divisors (1).

33198989443 is an equidigital number, since it uses as much as digits as its factorization.

33198989443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20155392, while the sum is 61.

The spelling of 33198989443 in words is "thirty-three billion, one hundred ninety-eight million, nine hundred eighty-nine thousand, four hundred forty-three".