344039957691487 has 2 divisors, whose sum is σ = 344039957691488. Its totient is φ = 344039957691486.

The previous prime is 344039957691473. The next prime is 344039957691503. The reversal of 344039957691487 is 784196759930443.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344039957691487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344039957691457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172019978845743 + 172019978845744.

It is an arithmetic number, because the mean of its divisors is an integer number (172019978845744).

Almost surely, 2^{344039957691487} is an apocalyptic number.

344039957691487 is a deficient number, since it is larger than the sum of its proper divisors (1).

344039957691487 is an equidigital number, since it uses as much as digits as its factorization.

344039957691487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4938071040, while the sum is 79.

The spelling of 344039957691487 in words is "three hundred forty-four trillion, thirty-nine billion, nine hundred fifty-seven million, six hundred ninety-one thousand, four hundred eighty-seven".