133505267905 has 16 divisors (see below), whose sum is σ = 164100568320. Its totient is φ = 104221539072.

The previous prime is 133505267899. The next prime is 133505267971. The reversal of 133505267905 is 509762505331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133505267905 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763695 + ... + 922084.

It is an arithmetic number, because the mean of its divisors is an integer number (10256285520).

Almost surely, 2^133505267905 is an apocalyptic number.

It is an amenable number.

133505267905 is a deficient number, since it is larger than the sum of its proper divisors (30595300415).

133505267905 is a wasteful number, since it uses less digits than its factorization.

133505267905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686168.

The product of its (nonzero) digits is 850500, while the sum is 46.

The spelling of 133505267905 in words is "one hundred thirty-three billion, five hundred five million, two hundred sixty-seven thousand, nine hundred five".