66789012234 has 24 divisors (see below), whose sum is σ = 155386682208. Its totient is φ = 19082574840.

The previous prime is 66789012221. The next prime is 66789012239. The reversal of 66789012234 is 43221098766.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66789012239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113586462 + ... + 113587049.

It is an arithmetic number, because the mean of its divisors is an integer number (6474445092).

Almost surely, 2^66789012234 is an apocalyptic number.

66789012234 is an abundant number, since it is smaller than the sum of its proper divisors (88597669974).

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

66789012234 is a wasteful number, since it uses less digits than its factorization.

66789012234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227173530 (or 227173523 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 66789012234 in words is "sixty-six billion, seven hundred eighty-nine million, twelve thousand, two hundred thirty-four".