129144060887 has 16 divisors (see below), whose sum is σ = 136184836032. Its totient is φ = 122222791680.

The previous prime is 129144060847. The next prime is 129144060889. The reversal of 129144060887 is 788060441921.

It is a cyclic number.

It is not a de Polignac number, because 129144060887 - 2²⁶ = 129076952023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129144060889) 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, 13820837 + ... + 13830177.

It is an arithmetic number, because the mean of its divisors is an integer number (8511552252).

Almost surely, 2^129144060887 is an apocalyptic number.

129144060887 is a deficient number, since it is larger than the sum of its proper divisors (7040775145).

129144060887 is an equidigital number, since it uses as much as digits as its factorization.

129144060887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 129144060887 in words is "one hundred twenty-nine billion, one hundred forty-four million, sixty thousand, eight hundred eighty-seven".