344800168421 has 4 divisors (see below), whose sum is σ = 344818785600. Its totient is φ = 344781551244.

The previous prime is 344800168403. The next prime is 344800168429. The reversal of 344800168421 is 124861008443.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124861008443 = 5827 ⋅21428009.

It is a cyclic number.

It is not a de Polignac number, because 344800168421 - 2²⁶ = 344733059557 is a prime.

It is a super-2 number, since 2×344800168421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344800168429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9280781 + ... + 9317858.

It is an arithmetic number, because the mean of its divisors is an integer number (86204696400).

Almost surely, 2^344800168421 is an apocalyptic number.

It is an amenable number.

344800168421 is a deficient number, since it is larger than the sum of its proper divisors (18617179).

344800168421 is a wasteful number, since it uses less digits than its factorization.

344800168421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18617178.

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 344800168421 in words is "three hundred forty-four billion, eight hundred million, one hundred sixty-eight thousand, four hundred twenty-one".