2161289172076 has 6 divisors (see below), whose sum is σ = 3782256051140. Its totient is φ = 1080644586036.

The previous prime is 2161289172071. The next prime is 2161289172127. The reversal of 2161289172076 is 6702719821612.

It is not an unprimeable number, because it can be changed into a prime (2161289172071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270161146506 + ... + 270161146513.

Almost surely, 2^{2161289172076} is an apocalyptic number.

It is an amenable number.

2161289172076 is a deficient number, since it is larger than the sum of its proper divisors (1620966879064).

2161289172076 is a wasteful number, since it uses less digits than its factorization.

2161289172076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540322293023 (or 540322293021 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 2161289172076 in words is "two trillion, one hundred sixty-one billion, two hundred eighty-nine million, one hundred seventy-two thousand, seventy-six".