161507872467 has 6 divisors (see below), whose sum is σ = 233289149132. Its totient is φ = 107671914972.

The previous prime is 161507872447. The next prime is 161507872489. The reversal of 161507872467 is 764278705161.

161507872467 is a `hidden beast` number, since 1 + 6 + 1 + 507 + 8 + 72 + 4 + 67 = 666.

It is not a de Polignac number, because 161507872467 - 2¹⁰ = 161507871443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161507872447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8972659573 + ... + 8972659590.

Almost surely, 2^161507872467 is an apocalyptic number.

161507872467 is a deficient number, since it is larger than the sum of its proper divisors (71781276665).

161507872467 is a wasteful number, since it uses less digits than its factorization.

161507872467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17945319169 (or 17945319166 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 161507872467 in words is "one hundred sixty-one billion, five hundred seven million, eight hundred seventy-two thousand, four hundred sixty-seven".