2771970102721 has 2 divisors, whose sum is σ = 2771970102722. Its totient is φ = 2771970102720.

The previous prime is 2771970102709. The next prime is 2771970102731. The reversal of 2771970102721 is 1272010791772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2429904204225 + 342065898496 = 1558815^2 + 584864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2771970102721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2771970102731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385985051360 + 1385985051361.

It is an arithmetic number, because the mean of its divisors is an integer number (1385985051361).

Almost surely, 2^{2771970102721} is an apocalyptic number.

It is an amenable number.

2771970102721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771970102721 is an equidigital number, since it uses as much as digits as its factorization.

2771970102721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172872, while the sum is 46.

The spelling of 2771970102721 in words is "two trillion, seven hundred seventy-one billion, nine hundred seventy million, one hundred two thousand, seven hundred twenty-one".