133505267904 has 70 divisors (see below), whose sum is σ = 395751452844. Its totient is φ = 44501754240.

The previous prime is 133505267899. The next prime is 133505267971. The reversal of 133505267904 is 409762505331.

133505267904 is a `hidden beast` number, since 1 + 3 + 3 + 50 + 526 + 79 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 133505267904.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12871482 + ... + 12881849.

Almost surely, 2^133505267904 is an apocalyptic number.

It is an amenable number.

133505267904 is an abundant number, since it is smaller than the sum of its proper divisors (262246184940).

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

133505267904 is an equidigital number, since it uses as much as digits as its factorization.

133505267904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25753355 (or 25753336 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 133505267904 in words is "one hundred thirty-three billion, five hundred five million, two hundred sixty-seven thousand, nine hundred four".