133188833808 has 30 divisors (see below), whose sum is σ = 372743750574. Its totient is φ = 44396277888.

The previous prime is 133188833773. The next prime is 133188833831. The reversal of 133188833808 is 808338881331.

133188833808 is a `hidden beast` number, since 1 + 3 + 3 + 188 + 83 + 380 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78875599104 + 54313234704 = 280848^2 + 233052^2 .

It is a super-2 number, since 2×133188833808² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462461085 + ... + 462461372.

Almost surely, 2^133188833808 is an apocalyptic number.

133188833808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133188833808 is an abundant number, since it is smaller than the sum of its proper divisors (239554916766).

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

133188833808 is a wasteful number, since it uses less digits than its factorization.

133188833808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924922471 (or 924922462 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 133188833808 in words is "one hundred thirty-three billion, one hundred eighty-eight million, eight hundred thirty-three thousand, eight hundred eight".