129893533566 has 16 divisors (see below), whose sum is σ = 268167295488. Its totient is φ = 41901139800.

The previous prime is 129893533519. The next prime is 129893533579. The reversal of 129893533566 is 665335398921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349175980 + ... + 349176351.

It is an arithmetic number, because the mean of its divisors is an integer number (16760455968).

Almost surely, 2^129893533566 is an apocalyptic number.

129893533566 is an abundant number, since it is smaller than the sum of its proper divisors (138273761922).

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

129893533566 is a wasteful number, since it uses less digits than its factorization.

129893533566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698352367.

The product of its digits is 31492800, while the sum is 60.

The spelling of 129893533566 in words is "one hundred twenty-nine billion, eight hundred ninety-three million, five hundred thirty-three thousand, five hundred sixty-six".