161276785922 has 54 divisors (see below), whose sum is σ = 284717018313. Its totient is φ = 68316126144.

The previous prime is 161276785921. The next prime is 161276785939. The reversal of 161276785922 is 229587672161.

161276785922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 101857360801 + 59419425121 = 319151^2 + 243761^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=283969.

Its product of digits (5080320) is a multiple of the sum of its prime factors (960).

It is not an unprimeable number, because it can be changed into a prime (161276785921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 449238779 + ... + 449239137.

Almost surely, 2^161276785922 is an apocalyptic number.

161276785922 is a deficient number, since it is larger than the sum of its proper divisors (123440232391).

161276785922 is an frugal number, since it uses more digits than its factorization.

161276785922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 481 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 56.

The spelling of 161276785922 in words is "one hundred sixty-one billion, two hundred seventy-six million, seven hundred eighty-five thousand, nine hundred twenty-two".