33500665272 has 128 divisors (see below), whose sum is σ = 89570188800. Its totient is φ = 10417684992.

The previous prime is 33500665267. The next prime is 33500665301. The reversal of 33500665272 is 27256600533.

It is a super-2 number, since 2×33500665272² (a number of 22 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 33500665272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5057979 + ... + 5064597.

It is an arithmetic number, because the mean of its divisors is an integer number (699767100).

Almost surely, 2^33500665272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33500665272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44785094400).

33500665272 is an abundant number, since it is smaller than the sum of its proper divisors (56069523528).

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

33500665272 is a wasteful number, since it uses less digits than its factorization.

33500665272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877 (or 6873 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 39.

The spelling of 33500665272 in words is "thirty-three billion, five hundred million, six hundred sixty-five thousand, two hundred seventy-two".