2161812887337 has 16 divisors (see below), whose sum is σ = 3093778964160. Its totient is φ = 1337850358272.

The previous prime is 2161812887327. The next prime is 2161812887357. The reversal of 2161812887337 is 7337882181612.

It is not a de Polignac number, because 2161812887337 - 2⁷ = 2161812887209 is a prime.

It is a super-3 number, since 3×2161812887337³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2161812887327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290328387 + ... + 290335832.

It is an arithmetic number, because the mean of its divisors is an integer number (193361185260).

Almost surely, 2^{2161812887337} is an apocalyptic number.

It is an amenable number.

2161812887337 is a deficient number, since it is larger than the sum of its proper divisors (931966076823).

2161812887337 is a wasteful number, since it uses less digits than its factorization.

2161812887337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580664312.

The product of its digits is 5419008, while the sum is 57.

The spelling of 2161812887337 in words is "two trillion, one hundred sixty-one billion, eight hundred twelve million, eight hundred eighty-seven thousand, three hundred thirty-seven".