344473912561 has 3 divisors (see below), whose sum is σ = 344474499481. Its totient is φ = 344473325642.

The previous prime is 344473912529. The next prime is 344473912603. The reversal of 344473912561 is 165219374443.

It is a happy number.

The square root of 344473912561 is 586919.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 165219374443 = 58921 ⋅2804083.

It is not a de Polignac number, because 344473912561 - 2⁵ = 344473912529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344473912501) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 293460 + ... + 880378.

Almost surely, 2^344473912561 is an apocalyptic number.

344473912561 is the 586919-th square number.

344473912561 is the 293460-th centered octagonal number.

It is an amenable number.

344473912561 is a deficient number, since it is larger than the sum of its proper divisors (586920).

344473912561 is an frugal number, since it uses more digits than its factorization.

344473912561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173838 (or 586919 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

Multiplying 344473912561 by its sum of digits (49), we get a square (16879221715489 = 4108433²).

The spelling of 344473912561 in words is "three hundred forty-four billion, four hundred seventy-three million, nine hundred twelve thousand, five hundred sixty-one".