1405317340729 has 2 divisors, whose sum is σ = 1405317340730. Its totient is φ = 1405317340728.

The previous prime is 1405317340699. The next prime is 1405317340751. The reversal of 1405317340729 is 9270437135041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1386258986025 + 19058354704 = 1177395^2 + 138052^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405317340729 - 2¹¹ = 1405317338681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1405317340829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702658670364 + 702658670365.

It is an arithmetic number, because the mean of its divisors is an integer number (702658670365).

Almost surely, 2^{1405317340729} is an apocalyptic number.

It is an amenable number.

1405317340729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405317340729 is an equidigital number, since it uses as much as digits as its factorization.

1405317340729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 1405317340729 in words is "one trillion, four hundred five billion, three hundred seventeen million, three hundred forty thousand, seven hundred twenty-nine".