344366165321 has 2 divisors, whose sum is σ = 344366165322. Its totient is φ = 344366165320.

The previous prime is 344366165317. The next prime is 344366165393. The reversal of 344366165321 is 123561663443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313622400400 + 30743764921 = 560020^2 + 175339^2 .

It is an emirp because it is prime and its reverse (123561663443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344366165321 - 2² = 344366165317 is a prime.

It is not a weakly prime, because it can be changed into another prime (344366165021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172183082660 + 172183082661.

It is an arithmetic number, because the mean of its divisors is an integer number (172183082661).

Almost surely, 2^344366165321 is an apocalyptic number.

It is an amenable number.

344366165321 is a deficient number, since it is larger than the sum of its proper divisors (1).

344366165321 is an equidigital number, since it uses as much as digits as its factorization.

344366165321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 44.

The spelling of 344366165321 in words is "three hundred forty-four billion, three hundred sixty-six million, one hundred sixty-five thousand, three hundred twenty-one".