2161872167294 has 16 divisors (see below), whose sum is σ = 3750717979008. Its totient is φ = 915353791512.

The previous prime is 2161872167269. The next prime is 2161872167297. The reversal of 2161872167294 is 4927612781612.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161872167297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930236432 + ... + 930238755.

It is an arithmetic number, because the mean of its divisors is an integer number (234419873688).

Almost surely, 2^{2161872167294} is an apocalyptic number.

2161872167294 is a deficient number, since it is larger than the sum of its proper divisors (1588845811714).

2161872167294 is a wasteful number, since it uses less digits than its factorization.

2161872167294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860475279.

The product of its digits is 4064256, while the sum is 56.

The spelling of 2161872167294 in words is "two trillion, one hundred sixty-one billion, eight hundred seventy-two million, one hundred sixty-seven thousand, two hundred ninety-four".