161372390635 has 16 divisors (see below), whose sum is σ = 197562343680. Its totient is φ = 126501670240.

The previous prime is 161372390629. The next prime is 161372390651. The reversal of 161372390635 is 536093273161.

It is not a de Polignac number, because 161372390635 - 2⁵ = 161372390603 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787717 + ... + 971206.

It is an arithmetic number, because the mean of its divisors is an integer number (12347646480).

Almost surely, 2^161372390635 is an apocalyptic number.

161372390635 is a deficient number, since it is larger than the sum of its proper divisors (36189953045).

161372390635 is a wasteful number, since it uses less digits than its factorization.

161372390635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759298.

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 161372390635 in words is "one hundred sixty-one billion, three hundred seventy-two million, three hundred ninety thousand, six hundred thirty-five".