10394523398729 has 2 divisors, whose sum is σ = 10394523398730. Its totient is φ = 10394523398728.

The previous prime is 10394523398723. The next prime is 10394523398797. The reversal of 10394523398729 is 92789332549301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9533242884025 + 861280514704 = 3087595^2 + 928052^2 .

It is a cyclic number.

It is not a de Polignac number, because 10394523398729 - 2²⁰ = 10394522350153 is a prime.

It is a super-2 number, since 2×10394523398729² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10394523398723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5197261699364 + 5197261699365.

It is an arithmetic number, because the mean of its divisors is an integer number (5197261699365).

Almost surely, 2^{10394523398729} is an apocalyptic number.

It is an amenable number.

10394523398729 is a deficient number, since it is larger than the sum of its proper divisors (1).

10394523398729 is an equidigital number, since it uses as much as digits as its factorization.

10394523398729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88179840, while the sum is 65.

The spelling of 10394523398729 in words is "ten trillion, three hundred ninety-four billion, five hundred twenty-three million, three hundred ninety-eight thousand, seven hundred twenty-nine".