33143021989 has 16 divisors (see below), whose sum is σ = 41325653376. Its totient is φ = 25822929600.

The previous prime is 33143021957. The next prime is 33143022019. The reversal of 33143021989 is 98912034133.

It is a cyclic number.

It is not a de Polignac number, because 33143021989 - 2⁵ = 33143021957 is a prime.

It is a super-2 number, since 2×33143021989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33143021189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956019 + ... + 990079.

It is an arithmetic number, because the mean of its divisors is an integer number (2582853336).

Almost surely, 2^33143021989 is an apocalyptic number.

It is an amenable number.

33143021989 is a deficient number, since it is larger than the sum of its proper divisors (8182631387).

33143021989 is a wasteful number, since it uses less digits than its factorization.

33143021989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46716.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 33143021989 in words is "thirty-three billion, one hundred forty-three million, twenty-one thousand, nine hundred eighty-nine".