1368643401439 has 2 divisors, whose sum is σ = 1368643401440. Its totient is φ = 1368643401438.

The previous prime is 1368643401361. The next prime is 1368643401449. The reversal of 1368643401439 is 9341043468631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1368643401439 - 2²³ = 1368635012831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368643401449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684321700719 + 684321700720.

It is an arithmetic number, because the mean of its divisors is an integer number (684321700720).

Almost surely, 2^{1368643401439} is an apocalyptic number.

1368643401439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368643401439 is an equidigital number, since it uses as much as digits as its factorization.

1368643401439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 1368643401439 in words is "one trillion, three hundred sixty-eight billion, six hundred forty-three million, four hundred one thousand, four hundred thirty-nine".