2675637816721 has 2 divisors, whose sum is σ = 2675637816722. Its totient is φ = 2675637816720.

The previous prime is 2675637816713. The next prime is 2675637816811. The reversal of 2675637816721 is 1276187365762.

2675637816721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2613107813121 + 62530003600 = 1616511^2 + 250060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2675637816721 - 2³ = 2675637816713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2675637816721.

It is not a weakly prime, because it can be changed into another prime (2675637816421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1337818908360 + 1337818908361.

It is an arithmetic number, because the mean of its divisors is an integer number (1337818908361).

Almost surely, 2^{2675637816721} is an apocalyptic number.

It is an amenable number.

2675637816721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2675637816721 is an equidigital number, since it uses as much as digits as its factorization.

2675637816721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35562240, while the sum is 61.

The spelling of 2675637816721 in words is "two trillion, six hundred seventy-five billion, six hundred thirty-seven million, eight hundred sixteen thousand, seven hundred twenty-one".