2160755881 has 2 divisors, whose sum is σ = 2160755882. Its totient is φ = 2160755880.

The previous prime is 2160755869. The next prime is 2160755903. The reversal of 2160755881 is 1885570612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2095808400 + 64947481 = 45780^2 + 8059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2160755881 is a prime.

It is a super-2 number, since 2×2160755881² = 9337731954552172322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2160755081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080377940 + 1080377941.

It is an arithmetic number, because the mean of its divisors is an integer number (1080377941).

Almost surely, 2^2160755881 is an apocalyptic number.

It is an amenable number.

2160755881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160755881 is an equidigital number, since it uses as much as digits as its factorization.

2160755881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 43.

The square root of 2160755881 is about 46483.9314279677. The cubic root of 2160755881 is about 1292.8115831232.

The spelling of 2160755881 in words is "two billion, one hundred sixty million, seven hundred fifty-five thousand, eight hundred eighty-one".