129319687860 has 48 divisors (see below), whose sum is σ = 395012866752. Its totient is φ = 31350227200.

The previous prime is 129319687853. The next prime is 129319687877. The reversal of 129319687860 is 68786913921.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 129319687794 and 129319687803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97968801 + ... + 97970120.

It is an arithmetic number, because the mean of its divisors is an integer number (8229434724).

Almost surely, 2^129319687860 is an apocalyptic number.

129319687860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129319687860 is an abundant number, since it is smaller than the sum of its proper divisors (265693178892).

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

129319687860 is a wasteful number, since it uses less digits than its factorization.

129319687860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195938944 (or 195938942 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 129319687860 in words is "one hundred twenty-nine billion, three hundred nineteen million, six hundred eighty-seven thousand, eight hundred sixty".