7219797171361 has 2 divisors, whose sum is σ = 7219797171362. Its totient is φ = 7219797171360.

The previous prime is 7219797171359. The next prime is 7219797171383. The reversal of 7219797171361 is 1631717979127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5260399125136 + 1959398046225 = 2293556^2 + 1399785^2 .

It is an emirp because it is prime and its reverse (1631717979127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7219797171361 - 2¹ = 7219797171359 is a prime.

Together with 7219797171359, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7219797171361.

It is not a weakly prime, because it can be changed into another prime (7219797171061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3609898585680 + 3609898585681.

It is an arithmetic number, because the mean of its divisors is an integer number (3609898585681).

Almost surely, 2^{7219797171361} is an apocalyptic number.

It is an amenable number.

7219797171361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7219797171361 is an equidigital number, since it uses as much as digits as its factorization.

7219797171361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7001316, while the sum is 61.

The spelling of 7219797171361 in words is "seven trillion, two hundred nineteen billion, seven hundred ninety-seven million, one hundred seventy-one thousand, three hundred sixty-one".