66823452888 has 32 divisors (see below), whose sum is σ = 167595816960. Its totient is φ = 22202859680.

The previous prime is 66823452881. The next prime is 66823452907. The reversal of 66823452888 is 88825432866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66823452881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4468920 + ... + 4483847.

It is an arithmetic number, because the mean of its divisors is an integer number (5237369280).

Almost surely, 2^66823452888 is an apocalyptic number.

It is an amenable number.

66823452888 is an abundant number, since it is smaller than the sum of its proper divisors (100772364072).

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

66823452888 is a wasteful number, since it uses less digits than its factorization.

66823452888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8953087 (or 8953083 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 60.

The spelling of 66823452888 in words is "sixty-six billion, eight hundred twenty-three million, four hundred fifty-two thousand, eight hundred eighty-eight".