33986690840 has 32 divisors (see below), whose sum is σ = 76660788960. Its totient is φ = 13560768000.

The previous prime is 33986690791. The next prime is 33986690863. The reversal of 33986690840 is 4809668933.

It is a congruent number.

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, 1043396 + ... + 1075475.

It is an arithmetic number, because the mean of its divisors is an integer number (2395649655).

Almost surely, 2^33986690840 is an apocalyptic number.

It is an amenable number.

33986690840 is an abundant number, since it is smaller than the sum of its proper divisors (42674098120).

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

33986690840 is a wasteful number, since it uses less digits than its factorization.

33986690840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119283 (or 2119279 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 33986690840 in words is "thirty-three billion, nine hundred eighty-six million, six hundred ninety thousand, eight hundred forty".