129813998340 has 96 divisors (see below), whose sum is σ = 398073836160. Its totient is φ = 31412606976.

The previous prime is 129813998297. The next prime is 129813998393. The reversal of 129813998340 is 43899318921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1364389 + ... + 1456428.

It is an arithmetic number, because the mean of its divisors is an integer number (4146602460).

Almost surely, 2^129813998340 is an apocalyptic number.

129813998340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129813998340 is an abundant number, since it is smaller than the sum of its proper divisors (268259837820).

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

129813998340 is a wasteful number, since it uses less digits than its factorization.

129813998340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820901 (or 2820899 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 129813998340 in words is "one hundred twenty-nine billion, eight hundred thirteen million, nine hundred ninety-eight thousand, three hundred forty".