800129742168 has 16 divisors (see below), whose sum is σ = 2000324355480. Its totient is φ = 266709914048.

The previous prime is 800129742163. The next prime is 800129742193. The reversal of 800129742168 is 861247921008.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800129742163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16669369605 + ... + 16669369652.

Almost surely, 2^800129742168 is an apocalyptic number.

It is an amenable number.

800129742168 is an abundant number, since it is smaller than the sum of its proper divisors (1200194613312).

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

800129742168 is a wasteful number, since it uses less digits than its factorization.

800129742168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33338739266 (or 33338739262 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 800129742168 in words is "eight hundred billion, one hundred twenty-nine million, seven hundred forty-two thousand, one hundred sixty-eight".