161488193975 has 12 divisors (see below), whose sum is σ = 208951681296. Its totient is φ = 123573574080.

The previous prime is 161488193957. The next prime is 161488193981. The reversal of 161488193975 is 579391884161.

It is not a de Polignac number, because 161488193975 - 2⁸ = 161488193719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140423942 + ... + 140425091.

It is an arithmetic number, because the mean of its divisors is an integer number (17412640108).

Almost surely, 2^161488193975 is an apocalyptic number.

161488193975 is a deficient number, since it is larger than the sum of its proper divisors (47463487321).

161488193975 is a wasteful number, since it uses less digits than its factorization.

161488193975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280849066 (or 280849061 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 62.

The spelling of 161488193975 in words is "one hundred sixty-one billion, four hundred eighty-eight million, one hundred ninety-three thousand, nine hundred seventy-five".