161914885475 has 24 divisors (see below), whose sum is σ = 230370755328. Its totient is φ = 110584980000.

The previous prime is 161914885469. The next prime is 161914885547. The reversal of 161914885475 is 574588419161.

It is a happy number.

It is not a de Polignac number, because 161914885475 - 2⁶ = 161914885411 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1799159 + ... + 1887008.

It is an arithmetic number, because the mean of its divisors is an integer number (9598781472).

Almost surely, 2^161914885475 is an apocalyptic number.

161914885475 is a deficient number, since it is larger than the sum of its proper divisors (68455869853).

161914885475 is a wasteful number, since it uses less digits than its factorization.

161914885475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686435 (or 3686430 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 59.

The spelling of 161914885475 in words is "one hundred sixty-one billion, nine hundred fourteen million, eight hundred eighty-five thousand, four hundred seventy-five".