2140644253169 has 2 divisors, whose sum is σ = 2140644253170. Its totient is φ = 2140644253168.

The previous prime is 2140644253067. The next prime is 2140644253177. The reversal of 2140644253169 is 9613524460412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1385300752144 + 755343501025 = 1176988^2 + 869105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140644253169 is a prime.

It is a super-2 number, since 2×2140644253169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2140644253369) 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, 1070322126584 + 1070322126585.

It is an arithmetic number, because the mean of its divisors is an integer number (1070322126585).

Almost surely, 2^{2140644253169} is an apocalyptic number.

It is an amenable number.

2140644253169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140644253169 is an equidigital number, since it uses as much as digits as its factorization.

2140644253169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 2140644253169 in words is "two trillion, one hundred forty billion, six hundred forty-four million, two hundred fifty-three thousand, one hundred sixty-nine".