129880810026 has 48 divisors (see below), whose sum is σ = 307035694368. Its totient is φ = 39352092000.

The previous prime is 129880809973. The next prime is 129880810039. The reversal of 129880810026 is 620018088921.

It is a happy number.

129880810026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1431280 + ... + 1519316.

It is an arithmetic number, because the mean of its divisors is an integer number (6396576966).

Almost surely, 2^129880810026 is an apocalyptic number.

129880810026 is an abundant number, since it is smaller than the sum of its proper divisors (177154884342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129880810026 is a wasteful number, since it uses less digits than its factorization.

129880810026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95507 (or 95504 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

Adding to 129880810026 its reverse (620018088921), we get a palindrome (749898898947).

The spelling of 129880810026 in words is "one hundred twenty-nine billion, eight hundred eighty million, eight hundred ten thousand, twenty-six".