722873279471729 has 2 divisors, whose sum is σ = 722873279471730. Its totient is φ = 722873279471728.

The previous prime is 722873279471599. The next prime is 722873279471731. The reversal of 722873279471729 is 927174972378227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450063708237025 + 272809571234704 = 21214705^2 + 16516948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722873279471729 is a prime.

Together with 722873279471731, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722873279471729.

It is not a weakly prime, because it can be changed into another prime (722873279471929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361436639735864 + 361436639735865.

It is an arithmetic number, because the mean of its divisors is an integer number (361436639735865).

Almost surely, 2^{722873279471729} is an apocalyptic number.

It is an amenable number.

722873279471729 is a deficient number, since it is larger than the sum of its proper divisors (1).

722873279471729 is an equidigital number, since it uses as much as digits as its factorization.

722873279471729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2091059712, while the sum is 77.

The spelling of 722873279471729 in words is "seven hundred twenty-two trillion, eight hundred seventy-three billion, two hundred seventy-nine million, four hundred seventy-one thousand, seven hundred twenty-nine".