161285707174 has 4 divisors (see below), whose sum is σ = 241928560764. Its totient is φ = 80642853586.

The previous prime is 161285707133. The next prime is 161285707199. The reversal of 161285707174 is 471707582161.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 40321426792 + ... + 40321426795.

It is an arithmetic number, because the mean of its divisors is an integer number (60482140191).

Almost surely, 2^161285707174 is an apocalyptic number.

161285707174 is a deficient number, since it is larger than the sum of its proper divisors (80642853590).

161285707174 is an equidigital number, since it uses as much as digits as its factorization.

161285707174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80642853589.

The product of its (nonzero) digits is 658560, while the sum is 49.

The spelling of 161285707174 in words is "one hundred sixty-one billion, two hundred eighty-five million, seven hundred seven thousand, one hundred seventy-four".