344774105561 has 2 divisors, whose sum is σ = 344774105562. Its totient is φ = 344774105560.

The previous prime is 344774105471. The next prime is 344774105567. The reversal of 344774105561 is 165501477443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303755299600 + 41018805961 = 551140^2 + 202531^2 .

It is an emirp because it is prime and its reverse (165501477443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344774105561 - 2¹⁸ = 344773843417 is a prime.

It is a super-2 number, since 2×344774105561² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (344774105567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172387052780 + 172387052781.

It is an arithmetic number, because the mean of its divisors is an integer number (172387052781).

Almost surely, 2^344774105561 is an apocalyptic number.

It is an amenable number.

344774105561 is a deficient number, since it is larger than the sum of its proper divisors (1).

344774105561 is an equidigital number, since it uses as much as digits as its factorization.

344774105561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 344774105561 in words is "three hundred forty-four billion, seven hundred seventy-four million, one hundred five thousand, five hundred sixty-one".