129888622406 has 16 divisors (see below), whose sum is σ = 201947331600. Its totient is φ = 62581645728.

The previous prime is 129888622403. The next prime is 129888622427. The reversal of 129888622406 is 604226888921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129888622403) 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 7 ways as a sum of consecutive naturals, for example, 2170340 + ... + 2229383.

It is an arithmetic number, because the mean of its divisors is an integer number (12621708225).

Almost surely, 2^129888622406 is an apocalyptic number.

129888622406 is a deficient number, since it is larger than the sum of its proper divisors (72058709194).

129888622406 is a wasteful number, since it uses less digits than its factorization.

129888622406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400263.

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 129888622406 in words is "one hundred twenty-nine billion, eight hundred eighty-eight million, six hundred twenty-two thousand, four hundred six".