344406263516513 has 4 divisors (see below), whose sum is σ = 375715923836208. Its totient is φ = 313096603196820.

The previous prime is 344406263516507. The next prime is 344406263516573. The reversal of 344406263516513 is 315615362604443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 344406263516513 - 2²⁰ = 344406262467937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344406263516573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15654830159831 + ... + 15654830159852.

It is an arithmetic number, because the mean of its divisors is an integer number (93928980959052).

Almost surely, 2^{344406263516513} is an apocalyptic number.

It is an amenable number.

344406263516513 is a deficient number, since it is larger than the sum of its proper divisors (31309660319695).

344406263516513 is a wasteful number, since it uses less digits than its factorization.

344406263516513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31309660319694.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 344406263516513 in words is "three hundred forty-four trillion, four hundred six billion, two hundred sixty-three million, five hundred sixteen thousand, five hundred thirteen".