33475809172 has 96 divisors (see below), whose sum is σ = 68119640064. Its totient is φ = 14267404800.

The previous prime is 33475809137. The next prime is 33475809179. The reversal of 33475809172 is 27190857433.

It is a super-2 number, since 2×33475809172² (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 (33475809179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20650522 + ... + 20652142.

It is an arithmetic number, because the mean of its divisors is an integer number (709579584).

Almost surely, 2^33475809172 is an apocalyptic number.

It is an amenable number.

33475809172 is an abundant number, since it is smaller than the sum of its proper divisors (34643830892).

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

33475809172 is a wasteful number, since it uses less digits than its factorization.

33475809172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 33475809172 in words is "thirty-three billion, four hundred seventy-five million, eight hundred nine thousand, one hundred seventy-two".