33388683720172 has 12 divisors (see below), whose sum is σ = 63742032556776. Its totient is φ = 15176674418240.

The previous prime is 33388683720169. The next prime is 33388683720181. The reversal of 33388683720172 is 27102738688333.

It is a super-2 number, since 2×33388683720172² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33388683720172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379416860413 + ... + 379416860500.

It is an arithmetic number, because the mean of its divisors is an integer number (5311836046398).

Almost surely, 2^{33388683720172} is an apocalyptic number.

It is an amenable number.

33388683720172 is a deficient number, since it is larger than the sum of its proper divisors (30353348836604).

33388683720172 is a wasteful number, since it uses less digits than its factorization.

33388683720172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758833720928 (or 758833720926 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 33388683720172 in words is "thirty-three trillion, three hundred eighty-eight billion, six hundred eighty-three million, seven hundred twenty thousand, one hundred seventy-two".