33138021732 has 48 divisors (see below), whose sum is σ = 82621566720. Its totient is φ = 10300856832.

The previous prime is 33138021701. The next prime is 33138021739. The reversal of 33138021732 is 23712083133.

It is a junction number, because it is equal to n+sod(n) for n = 33138021693 and 33138021702.

It is not an unprimeable number, because it can be changed into a prime (33138021739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 722908 + ... + 767379.

It is an arithmetic number, because the mean of its divisors is an integer number (1721282640).

Almost surely, 2^33138021732 is an apocalyptic number.

It is an amenable number.

33138021732 is an abundant number, since it is smaller than the sum of its proper divisors (49483544988).

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

33138021732 is a wasteful number, since it uses less digits than its factorization.

33138021732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490420 (or 1490418 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 33138021732 in words is "thirty-three billion, one hundred thirty-eight million, twenty-one thousand, seven hundred thirty-two".