161207690936 has 16 divisors (see below), whose sum is σ = 302271249840. Its totient is φ = 80602024320.

The previous prime is 161207690929. The next prime is 161207690951. The reversal of 161207690936 is 639096702161.

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 in 3 ways as a sum of consecutive naturals, for example, 194645 + ... + 600251.

It is an arithmetic number, because the mean of its divisors is an integer number (18891953115).

Almost surely, 2^161207690936 is an apocalyptic number.

It is an amenable number.

161207690936 is a deficient number, since it is larger than the sum of its proper divisors (141063558904).

161207690936 is a wasteful number, since it uses less digits than its factorization.

161207690936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455294 (or 455290 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 50.

The spelling of 161207690936 in words is "one hundred sixty-one billion, two hundred seven million, six hundred ninety thousand, nine hundred thirty-six".