129798897886 has 8 divisors (see below), whose sum is σ = 222512396400. Its totient is φ = 55628099088.

The previous prime is 129798897871. The next prime is 129798897911. The reversal of 129798897886 is 688798897921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4635674911 + ... + 4635674938.

It is an arithmetic number, because the mean of its divisors is an integer number (27814049550).

Almost surely, 2^129798897886 is an apocalyptic number.

129798897886 is a deficient number, since it is larger than the sum of its proper divisors (92713498514).

129798897886 is an equidigital number, since it uses as much as digits as its factorization.

129798897886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271349858.

The product of its digits is 1755758592, while the sum is 82.

The spelling of 129798897886 in words is "one hundred twenty-nine billion, seven hundred ninety-eight million, eight hundred ninety-seven thousand, eight hundred eighty-six".