2160865555297 has 2 divisors, whose sum is σ = 2160865555298. Its totient is φ = 2160865555296.

The previous prime is 2160865555249. The next prime is 2160865555307. The reversal of 2160865555297 is 7925555680612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1952044888336 + 208820666961 = 1397156^2 + 456969^2 .

It is a cyclic number.

It is not a de Polignac number, because 2160865555297 - 2⁷ = 2160865555169 is a prime.

It is a super-3 number, since 3×2160865555297³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2160865555697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080432777648 + 1080432777649.

It is an arithmetic number, because the mean of its divisors is an integer number (1080432777649).

Almost surely, 2^{2160865555297} is an apocalyptic number.

It is an amenable number.

2160865555297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160865555297 is an equidigital number, since it uses as much as digits as its factorization.

2160865555297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360000, while the sum is 61.

The spelling of 2160865555297 in words is "two trillion, one hundred sixty billion, eight hundred sixty-five million, five hundred fifty-five thousand, two hundred ninety-seven".