33125689644 has 24 divisors (see below), whose sum is σ = 77508587520. Its totient is φ = 11011137744.

The previous prime is 33125689637. The next prime is 33125689679. The reversal of 33125689644 is 44698652133.

It is a super-2 number, since 2×33125689644² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3840364 + ... + 3848979.

It is an arithmetic number, because the mean of its divisors is an integer number (3229524480).

Almost surely, 2^33125689644 is an apocalyptic number.

It is an amenable number.

33125689644 is an abundant number, since it is smaller than the sum of its proper divisors (44382897876).

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

33125689644 is a wasteful number, since it uses less digits than its factorization.

33125689644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689709 (or 7689707 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The spelling of 33125689644 in words is "thirty-three billion, one hundred twenty-five million, six hundred eighty-nine thousand, six hundred forty-four".