129822831817 has 16 divisors (see below), whose sum is σ = 156750773760. Its totient is φ = 105153628608.

The previous prime is 129822831797. The next prime is 129822831821. The reversal of 129822831817 is 718138228921.

It is a de Polignac number, because none of the positive numbers 2^k-129822831817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129822831317) 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, 6793878 + ... + 6812959.

It is an arithmetic number, because the mean of its divisors is an integer number (9796923360).

Almost surely, 2^129822831817 is an apocalyptic number.

It is an amenable number.

129822831817 is a deficient number, since it is larger than the sum of its proper divisors (26927941943).

129822831817 is a wasteful number, since it uses less digits than its factorization.

129822831817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606920.

The product of its digits is 774144, while the sum is 52.

The spelling of 129822831817 in words is "one hundred twenty-nine billion, eight hundred twenty-two million, eight hundred thirty-one thousand, eight hundred seventeen".