129097792869 has 16 divisors (see below), whose sum is σ = 178532901120. Its totient is φ = 82910001600.

The previous prime is 129097792847. The next prime is 129097792909. The reversal of 129097792869 is 968297790921.

It is not a de Polignac number, because 129097792869 - 2¹⁶ = 129097727333 is a prime.

It is a super-2 number, since 2×129097792869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129097792829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5746429 + ... + 5768850.

It is an arithmetic number, because the mean of its divisors is an integer number (11158306320).

Almost surely, 2^129097792869 is an apocalyptic number.

It is an amenable number.

129097792869 is a deficient number, since it is larger than the sum of its proper divisors (49435108251).

129097792869 is a wasteful number, since it uses less digits than its factorization.

129097792869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11515420.

The product of its (nonzero) digits is 61725888, while the sum is 69.

The spelling of 129097792869 in words is "one hundred twenty-nine billion, ninety-seven million, seven hundred ninety-two thousand, eight hundred sixty-nine".