129732686899 has 4 divisors (see below), whose sum is σ = 131859452320. Its totient is φ = 127605921480.

The previous prime is 129732686843. The next prime is 129732686947. The reversal of 129732686899 is 998686237921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129732686899 - 2¹³ = 129732678707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129732686399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063382619 + ... + 1063382740.

It is an arithmetic number, because the mean of its divisors is an integer number (32964863080).

Almost surely, 2^129732686899 is an apocalyptic number.

129732686899 is a deficient number, since it is larger than the sum of its proper divisors (2126765421).

129732686899 is an equidigital number, since it uses as much as digits as its factorization.

129732686899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126765420.

The product of its digits is 141087744, while the sum is 70.

The spelling of 129732686899 in words is "one hundred twenty-nine billion, seven hundred thirty-two million, six hundred eighty-six thousand, eight hundred ninety-nine".