344253662643565 has 16 divisors (see below), whose sum is σ = 417121239689856. Its totient is φ = 272725112260800.

The previous prime is 344253662643551. The next prime is 344253662643589. The reversal of 344253662643565 is 565346266352443.

It is a happy number.

It is not a de Polignac number, because 344253662643565 - 2⁷ = 344253662643437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344253662643497 and 344253662643506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30463335 + ... + 40205995.

It is an arithmetic number, because the mean of its divisors is an integer number (26070077480616).

Almost surely, 2^{344253662643565} is an apocalyptic number.

It is an amenable number.

344253662643565 is a deficient number, since it is larger than the sum of its proper divisors (72867577046291).

344253662643565 is a wasteful number, since it uses less digits than its factorization.

344253662643565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9811380.

The product of its digits is 1119744000, while the sum is 64.

The spelling of 344253662643565 in words is "three hundred forty-four trillion, two hundred fifty-three billion, six hundred sixty-two million, six hundred forty-three thousand, five hundred sixty-five".