33887139072 has 72 divisors (see below), whose sum is σ = 91275997344. Its totient is φ = 11159599104.

The previous prime is 33887139061. The next prime is 33887139107. The reversal of 33887139072 is 27093178833.

It is a super-2 number, since 2×33887139072² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202063 + ... + 329550.

Almost surely, 2^33887139072 is an apocalyptic number.

33887139072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

33887139072 is an abundant number, since it is smaller than the sum of its proper divisors (57388858272).

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

33887139072 is an equidigital number, since it uses as much as digits as its factorization.

33887139072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531715 (or 531701 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 33887139072 in words is "thirty-three billion, eight hundred eighty-seven million, one hundred thirty-nine thousand, seventy-two".