161420698268 has 12 divisors (see below), whose sum is σ = 282493880760. Its totient is φ = 80708160912.

The previous prime is 161420698253. The next prime is 161420698289. The reversal of 161420698268 is 862896024161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375071 + ... + 680822.

It is an arithmetic number, because the mean of its divisors is an integer number (23541156730).

Almost surely, 2^161420698268 is an apocalyptic number.

It is an amenable number.

161420698268 is a deficient number, since it is larger than the sum of its proper divisors (121073182492).

161420698268 is a wasteful number, since it uses less digits than its factorization.

161420698268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094116 (or 1094114 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 161420698268 in words is "one hundred sixty-one billion, four hundred twenty million, six hundred ninety-eight thousand, two hundred sixty-eight".