129885489960 has 64 divisors (see below), whose sum is σ = 389685816000. Its totient is φ = 34633522176.

The previous prime is 129885489953. The next prime is 129885489973. The reversal of 129885489960 is 69984588921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971472 + ... + 2036288.

It is an arithmetic number, because the mean of its divisors is an integer number (6088840875).

Almost surely, 2^129885489960 is an apocalyptic number.

129885489960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129885489960 is an abundant number, since it is smaller than the sum of its proper divisors (259800326040).

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

129885489960 is a wasteful number, since it uses less digits than its factorization.

129885489960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81530 (or 81526 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 69.

The spelling of 129885489960 in words is "one hundred twenty-nine billion, eight hundred eighty-five million, four hundred eighty-nine thousand, nine hundred sixty".