66329050920 has 256 divisors, whose sum is σ = 228930969600. Its totient is φ = 15204879360.

The previous prime is 66329050919. The next prime is 66329050933. The reversal of 66329050920 is 2905092366.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15221382 + ... + 15225738.

It is an arithmetic number, because the mean of its divisors is an integer number (894261600).

Almost surely, 2^66329050920 is an apocalyptic number.

66329050920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66329050920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114465484800).

66329050920 is an abundant number, since it is smaller than the sum of its proper divisors (162601918680).

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

66329050920 is a wasteful number, since it uses less digits than its factorization.

66329050920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008 (or 5004 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 66329050920 in words is "sixty-six billion, three hundred twenty-nine million, fifty thousand, nine hundred twenty".