33981082956 has 24 divisors (see below), whose sum is σ = 88099104240. Its totient is φ = 11327027616.

The previous prime is 33981082943. The next prime is 33981082963. The reversal of 33981082956 is 65928018933.

33981082956 is a `hidden beast` number, since 339 + 8 + 10 + 8 + 295 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 157319721 + ... + 157319936.

It is an arithmetic number, because the mean of its divisors is an integer number (3670796010).

Almost surely, 2^33981082956 is an apocalyptic number.

33981082956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

33981082956 is an abundant number, since it is smaller than the sum of its proper divisors (54118021284).

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

33981082956 is a wasteful number, since it uses less digits than its factorization.

33981082956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314639670 (or 314639662 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 33981082956 in words is "thirty-three billion, nine hundred eighty-one million, eighty-two thousand, nine hundred fifty-six".