133505037171 has 12 divisors (see below), whose sum is σ = 210371573880. Its totient is φ = 80912143680.

The previous prime is 133505037167. The next prime is 133505037173. The reversal of 133505037171 is 171730505331.

133505037171 is a `hidden beast` number, since 1 + 33 + 50 + 503 + 7 + 1 + 71 = 666.

It is not a de Polignac number, because 133505037171 - 2² = 133505037167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133505037173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674267766 + ... + 674267963.

It is an arithmetic number, because the mean of its divisors is an integer number (17530964490).

Almost surely, 2^133505037171 is an apocalyptic number.

133505037171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133505037171 is a deficient number, since it is larger than the sum of its proper divisors (76866536709).

133505037171 is a wasteful number, since it uses less digits than its factorization.

133505037171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348535746 (or 1348535743 counting only the distinct ones).

The product of its (nonzero) digits is 33075, while the sum is 36.

The spelling of 133505037171 in words is "one hundred thirty-three billion, five hundred five million, thirty-seven thousand, one hundred seventy-one".