33243434172 has 36 divisors (see below), whose sum is σ = 90496016520. Its totient is φ = 10228748832.

The previous prime is 33243434137. The next prime is 33243434173. The reversal of 33243434172 is 27143434233.

33243434172 is a `hidden beast` number, since 3 + 3 + 243 + 4 + 341 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×33243434172² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33243434173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35516022 + ... + 35516957.

Almost surely, 2^33243434172 is an apocalyptic number.

It is an amenable number.

33243434172 is an abundant number, since it is smaller than the sum of its proper divisors (57252582348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33243434172 is a wasteful number, since it uses less digits than its factorization.

33243434172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71033002 (or 71032997 counting only the distinct ones).

The product of its digits is 145152, while the sum is 36.

The spelling of 33243434172 in words is "thirty-three billion, two hundred forty-three million, four hundred thirty-four thousand, one hundred seventy-two".