344668537340819 has 4 divisors (see below), whose sum is σ = 344670862419000. Its totient is φ = 344666212262640.

The previous prime is 344668537340807. The next prime is 344668537340839. The reversal of 344668537340819 is 918043735866443.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 344668537340819 - 2²⁰ = 344668536292243 is a prime.

It is a super-2 number, since 2×344668537340819² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344668537340839) 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, 1162316717 + ... + 1162613214.

It is an arithmetic number, because the mean of its divisors is an integer number (86167715604750).

Almost surely, 2^{344668537340819} is an apocalyptic number.

344668537340819 is a deficient number, since it is larger than the sum of its proper divisors (2325078181).

344668537340819 is a wasteful number, since it uses less digits than its factorization.

344668537340819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325078180.

The product of its (nonzero) digits is 1254113280, while the sum is 71.

The spelling of 344668537340819 in words is "three hundred forty-four trillion, six hundred sixty-eight billion, five hundred thirty-seven million, three hundred forty thousand, eight hundred nineteen".