66789532824 has 32 divisors (see below), whose sum is σ = 190827237120. Its totient is φ = 19082723616.

The previous prime is 66789532793. The next prime is 66789532871. The reversal of 66789532824 is 42823598766.

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, 198778204 + ... + 198778539.

It is an arithmetic number, because the mean of its divisors is an integer number (5963351160).

Almost surely, 2^66789532824 is an apocalyptic number.

It is an amenable number.

66789532824 is an abundant number, since it is smaller than the sum of its proper divisors (124037704296).

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

66789532824 is a wasteful number, since it uses less digits than its factorization.

66789532824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397556759 (or 397556755 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 60.

The spelling of 66789532824 in words is "sixty-six billion, seven hundred eighty-nine million, five hundred thirty-two thousand, eight hundred twenty-four".