344857342139 has 2 divisors, whose sum is σ = 344857342140. Its totient is φ = 344857342138.

The previous prime is 344857342129. The next prime is 344857342157. The reversal of 344857342139 is 931243758443.

It is a weak prime.

It is an emirp because it is prime and its reverse (931243758443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344857342139 - 2¹² = 344857338043 is a prime.

It is not a weakly prime, because it can be changed into another prime (344857342129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172428671069 + 172428671070.

It is an arithmetic number, because the mean of its divisors is an integer number (172428671070).

Almost surely, 2^344857342139 is an apocalyptic number.

344857342139 is a deficient number, since it is larger than the sum of its proper divisors (1).

344857342139 is an equidigital number, since it uses as much as digits as its factorization.

344857342139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 53.

The spelling of 344857342139 in words is "three hundred forty-four billion, eight hundred fifty-seven million, three hundred forty-two thousand, one hundred thirty-nine".