161889318592 has 14 divisors (see below), whose sum is σ = 321249116708. Its totient is φ = 80944659264.

The previous prime is 161889318587. The next prime is 161889318601. The reversal of 161889318592 is 295813988161.

161889318592 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161889318592.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264760238 + ... + 1264760365.

Almost surely, 2^161889318592 is an apocalyptic number.

It is an amenable number.

161889318592 is a deficient number, since it is larger than the sum of its proper divisors (159359798116).

161889318592 is an equidigital number, since it uses as much as digits as its factorization.

161889318592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529520615 (or 2529520605 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 61.

The spelling of 161889318592 in words is "one hundred sixty-one billion, eight hundred eighty-nine million, three hundred eighteen thousand, five hundred ninety-two".