344855256409 has 2 divisors, whose sum is σ = 344855256410. Its totient is φ = 344855256408.

The previous prime is 344855256397. The next prime is 344855256419. The reversal of 344855256409 is 904652558443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270195158809 + 74660097600 = 519803^2 + 273240^2 .

It is a cyclic number.

It is not a de Polignac number, because 344855256409 - 2²¹ = 344853159257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 344855256409.

It is not a weakly prime, because it can be changed into another prime (344855256419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172427628204 + 172427628205.

It is an arithmetic number, because the mean of its divisors is an integer number (172427628205).

Almost surely, 2^344855256409 is an apocalyptic number.

It is an amenable number.

344855256409 is a deficient number, since it is larger than the sum of its proper divisors (1).

344855256409 is an equidigital number, since it uses as much as digits as its factorization.

344855256409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736000, while the sum is 55.

The spelling of 344855256409 in words is "three hundred forty-four billion, eight hundred fifty-five million, two hundred fifty-six thousand, four hundred nine".