33198989423 has 4 divisors (see below), whose sum is σ = 33275661888. Its totient is φ = 33122316960.

The previous prime is 33198989413. The next prime is 33198989443. The reversal of 33198989423 is 32498989133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33198989423 - 2¹⁸ = 33198727279 is a prime.

It is a super-2 number, since 2×33198989423² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33198989413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38335583 + ... + 38336448.

It is an arithmetic number, because the mean of its divisors is an integer number (8318915472).

Almost surely, 2^33198989423 is an apocalyptic number.

33198989423 is a deficient number, since it is larger than the sum of its proper divisors (76672465).

33198989423 is an equidigital number, since it uses as much as digits as its factorization.

33198989423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76672464.

The product of its digits is 10077696, while the sum is 59.

The spelling of 33198989423 in words is "thirty-three billion, one hundred ninety-eight million, nine hundred eighty-nine thousand, four hundred twenty-three".