868529129539 has 2 divisors, whose sum is σ = 868529129540. Its totient is φ = 868529129538.

The previous prime is 868529129513. The next prime is 868529129543. The reversal of 868529129539 is 935921925868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868529129539 - 2²³ = 868520740931 is a prime.

It is not a weakly prime, because it can be changed into another prime (868529129239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434264564769 + 434264564770.

It is an arithmetic number, because the mean of its divisors is an integer number (434264564770).

Almost surely, 2^868529129539 is an apocalyptic number.

868529129539 is a deficient number, since it is larger than the sum of its proper divisors (1).

868529129539 is an equidigital number, since it uses as much as digits as its factorization.

868529129539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83980800, while the sum is 67.

The spelling of 868529129539 in words is "eight hundred sixty-eight billion, five hundred twenty-nine million, one hundred twenty-nine thousand, five hundred thirty-nine".