33990168906 has 24 divisors (see below), whose sum is σ = 73664310720. Its totient is φ = 11327141736.

The previous prime is 33990168893. The next prime is 33990168977. The reversal of 33990168906 is 60986109933.

33990168906 is a `hidden beast` number, since 3 + 399 + 0 + 168 + 90 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170380 + ... + 311463.

It is an arithmetic number, because the mean of its divisors is an integer number (3069346280).

Almost surely, 2^33990168906 is an apocalyptic number.

33990168906 is an abundant number, since it is smaller than the sum of its proper divisors (39674141814).

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

33990168906 is a wasteful number, since it uses less digits than its factorization.

33990168906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485770 (or 485767 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 33990168906 in words is "thirty-three billion, nine hundred ninety million, one hundred sixty-eight thousand, nine hundred six".