86136393729 has 16 divisors (see below), whose sum is σ = 115372607040. Its totient is φ = 57162631680.

The previous prime is 86136393709. The next prime is 86136393779. The reversal of 86136393729 is 92739363168.

It is a happy number.

It is not a de Polignac number, because 86136393729 - 2²⁵ = 86102839297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86136393709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799954 + ... + 901220.

It is an arithmetic number, because the mean of its divisors is an integer number (7210787940).

Almost surely, 2^86136393729 is an apocalyptic number.

It is an amenable number.

86136393729 is a deficient number, since it is larger than the sum of its proper divisors (29236213311).

86136393729 is a wasteful number, since it uses less digits than its factorization.

86136393729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102560.

The product of its digits is 8817984, while the sum is 57.

The spelling of 86136393729 in words is "eighty-six billion, one hundred thirty-six million, three hundred ninety-three thousand, seven hundred twenty-nine".