129139113128860 has 48 divisors (see below), whose sum is σ = 278530555695840. Its totient is φ = 50257940555520.

The previous prime is 129139113128747. The next prime is 129139113128867. The reversal of 129139113128860 is 68821311931921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129139113128867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20514295 + ... + 26059825.

It is an arithmetic number, because the mean of its divisors is an integer number (5802719910330).

Almost surely, 2^{129139113128860} is an apocalyptic number.

129139113128860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129139113128860 is an abundant number, since it is smaller than the sum of its proper divisors (149391442566980).

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

129139113128860 is a wasteful number, since it uses less digits than its factorization.

129139113128860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577046 (or 5577044 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 129139113128860 in words is "one hundred twenty-nine trillion, one hundred thirty-nine billion, one hundred thirteen million, one hundred twenty-eight thousand, eight hundred sixty".