66801533160 has 64 divisors (see below), whose sum is σ = 200757009600. Its totient is φ = 17782416896.

The previous prime is 66801533159. The next prime is 66801533179. The reversal of 66801533160 is 6133510866.

66801533160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 420894 + ... + 557453.

It is an arithmetic number, because the mean of its divisors is an integer number (3136828275).

Almost surely, 2^66801533160 is an apocalyptic number.

66801533160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66801533160 is an abundant number, since it is smaller than the sum of its proper divisors (133955476440).

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

66801533160 is a wasteful number, since it uses less digits than its factorization.

66801533160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978930 (or 978926 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 66801533160 in words is "sixty-six billion, eight hundred one million, five hundred thirty-three thousand, one hundred sixty".