129444479268 has 48 divisors (see below), whose sum is σ = 325383018240. Its totient is φ = 39815322624.

The previous prime is 129444479249. The next prime is 129444479357. The reversal of 129444479268 is 862974444921.

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, 314868 + ... + 598356.

It is an arithmetic number, because the mean of its divisors is an integer number (6778812880).

Almost surely, 2^129444479268 is an apocalyptic number.

It is an amenable number.

129444479268 is an abundant number, since it is smaller than the sum of its proper divisors (195938538972).

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

129444479268 is a wasteful number, since it uses less digits than its factorization.

129444479268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286436 (or 286434 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 60.

The spelling of 129444479268 in words is "one hundred twenty-nine billion, four hundred forty-four million, four hundred seventy-nine thousand, two hundred sixty-eight".