2156181160708 has 12 divisors (see below), whose sum is σ = 3995276856732. Its totient is φ = 1014673487360.

The previous prime is 2156181160699. The next prime is 2156181160709. The reversal of 2156181160708 is 8070611816512.

It can be written as a sum of positive squares in 2 ways, for example, as 1559081871424 + 597099289284 = 1248632^2 + 772722^2 .

It is a super-2 number, since 2×2156181160708² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2156181160709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15854273173 + ... + 15854273308.

It is an arithmetic number, because the mean of its divisors is an integer number (332939738061).

Almost surely, 2^{2156181160708} is an apocalyptic number.

It is an amenable number.

2156181160708 is a deficient number, since it is larger than the sum of its proper divisors (1839095696024).

2156181160708 is a wasteful number, since it uses less digits than its factorization.

2156181160708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31708546502 (or 31708546500 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The spelling of 2156181160708 in words is "two trillion, one hundred fifty-six billion, one hundred eighty-one million, one hundred sixty thousand, seven hundred eight".