161092853921 has 16 divisors (see below), whose sum is σ = 177093734400. Its totient is φ = 145855428048.

The previous prime is 161092853903. The next prime is 161092853923. The reversal of 161092853921 is 129358290161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161092853921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161092853923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363440 + ... + 673998.

It is an arithmetic number, because the mean of its divisors is an integer number (11068358400).

Almost surely, 2^161092853921 is an apocalyptic number.

It is an amenable number.

161092853921 is a deficient number, since it is larger than the sum of its proper divisors (16000880479).

161092853921 is a wasteful number, since it uses less digits than its factorization.

161092853921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311788.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 161092853921 in words is "one hundred sixty-one billion, ninety-two million, eight hundred fifty-three thousand, nine hundred twenty-one".