129568457284 has 24 divisors (see below), whose sum is σ = 259250351360. Its totient is φ = 55505030976.

The previous prime is 129568457281. The next prime is 129568457299. The reversal of 129568457284 is 482754865921.

It is not an unprimeable number, because it can be changed into a prime (129568457281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947649 + ... + 1075720.

Almost surely, 2^129568457284 is an apocalyptic number.

129568457284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129568457284 is an abundant number, since it is smaller than the sum of its proper divisors (129681894076).

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

129568457284 is a wasteful number, since it uses less digits than its factorization.

129568457284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025667 (or 2025665 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 61.

The spelling of 129568457284 in words is "one hundred twenty-nine billion, five hundred sixty-eight million, four hundred fifty-seven thousand, two hundred eighty-four".