133904507688 has 96 divisors (see below), whose sum is σ = 427836264960. Its totient is φ = 37024283520.

The previous prime is 133904507683. The next prime is 133904507707. The reversal of 133904507688 is 886705409331.

133904507688 is a `hidden beast` number, since 1 + 33 + 90 + 450 + 76 + 8 + 8 = 666.

It is a super-2 number, since 2×133904507688² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133904507683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4269595 + ... + 4300842.

It is an arithmetic number, because the mean of its divisors is an integer number (4456627760).

Almost surely, 2^133904507688 is an apocalyptic number.

133904507688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133904507688 is an abundant number, since it is smaller than the sum of its proper divisors (293931757272).

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

133904507688 is a wasteful number, since it uses less digits than its factorization.

133904507688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570487 (or 8570480 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 133904507688 in words is "one hundred thirty-three billion, nine hundred four million, five hundred seven thousand, six hundred eighty-eight".