33987080128 has 56 divisors (see below), whose sum is σ = 71529305760. Its totient is φ = 15988177920.

The previous prime is 33987080123. The next prime is 33987080137. The reversal of 33987080128 is 82108078933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33987080123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99463 + ... + 279046.

Almost surely, 2^33987080128 is an apocalyptic number.

It is an amenable number.

33987080128 is an abundant number, since it is smaller than the sum of its proper divisors (37542225632).

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

33987080128 is a wasteful number, since it uses less digits than its factorization.

33987080128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378605 (or 378595 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 33987080128 in words is "thirty-three billion, nine hundred eighty-seven million, eighty thousand, one hundred twenty-eight".