2644693691071 has 2 divisors, whose sum is σ = 2644693691072. Its totient is φ = 2644693691070.

The previous prime is 2644693691033. The next prime is 2644693691177. The reversal of 2644693691071 is 1701963964462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2644693691071 - 2⁷ = 2644693690943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2644693690997 and 2644693691015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644693692071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322346845535 + 1322346845536.

It is an arithmetic number, because the mean of its divisors is an integer number (1322346845536).

Almost surely, 2^{2644693691071} is an apocalyptic number.

2644693691071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644693691071 is an equidigital number, since it uses as much as digits as its factorization.

2644693691071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 2644693691071 in words is "two trillion, six hundred forty-four billion, six hundred ninety-three million, six hundred ninety-one thousand, seventy-one".