161377805796 has 48 divisors (see below), whose sum is σ = 389975523840. Its totient is φ = 51878632960.

The previous prime is 161377805777. The next prime is 161377805807. The reversal of 161377805796 is 697508773161.

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, 43405 + ... + 569771.

It is an arithmetic number, because the mean of its divisors is an integer number (8124490080).

Almost surely, 2^161377805796 is an apocalyptic number.

It is an amenable number.

161377805796 is an abundant number, since it is smaller than the sum of its proper divisors (228597718044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161377805796 is a wasteful number, since it uses less digits than its factorization.

161377805796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527284 (or 527282 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 161377805796 in words is "one hundred sixty-one billion, three hundred seventy-seven million, eight hundred five thousand, seven hundred ninety-six".