2170918766353 has 2 divisors, whose sum is σ = 2170918766354. Its totient is φ = 2170918766352.

The previous prime is 2170918766329. The next prime is 2170918766369. The reversal of 2170918766353 is 3536678190712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2147303375424 + 23615390929 = 1465368^2 + 153673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170918766353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2170918736353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085459383176 + 1085459383177.

It is an arithmetic number, because the mean of its divisors is an integer number (1085459383177).

Almost surely, 2^{2170918766353} is an apocalyptic number.

It is an amenable number.

2170918766353 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170918766353 is an equidigital number, since it uses as much as digits as its factorization.

2170918766353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 2170918766353 in words is "two trillion, one hundred seventy billion, nine hundred eighteen million, seven hundred sixty-six thousand, three hundred fifty-three".