66289758280 has 64 divisors (see below), whose sum is σ = 150745003200. Its totient is φ = 26233424640.

The previous prime is 66289758221. The next prime is 66289758307. The reversal of 66289758280 is 8285798266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3001759 + ... + 3023761.

It is an arithmetic number, because the mean of its divisors is an integer number (2355390675).

Almost surely, 2^66289758280 is an apocalyptic number.

It is an amenable number.

66289758280 is an abundant number, since it is smaller than the sum of its proper divisors (84455244920).

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

66289758280 is a wasteful number, since it uses less digits than its factorization.

66289758280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22814 (or 22810 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 66289758280 in words is "sixty-six billion, two hundred eighty-nine million, seven hundred fifty-eight thousand, two hundred eighty".