344724379681 has 4 divisors (see below), whose sum is σ = 376062959664. Its totient is φ = 313385799700.

The previous prime is 344724379669. The next prime is 344724379759. The reversal of 344724379681 is 186973427443.

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 344724379681 - 2⁷ = 344724379553 is a prime.

It is a super-2 number, since 2×344724379681² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344724379981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15669289975 + ... + 15669289996.

It is an arithmetic number, because the mean of its divisors is an integer number (94015739916).

Almost surely, 2^344724379681 is an apocalyptic number.

It is an amenable number.

344724379681 is a deficient number, since it is larger than the sum of its proper divisors (31338579983).

344724379681 is a wasteful number, since it uses less digits than its factorization.

344724379681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31338579982.

The product of its digits is 24385536, while the sum is 58.

The spelling of 344724379681 in words is "three hundred forty-four billion, seven hundred twenty-four million, three hundred seventy-nine thousand, six hundred eighty-one".