66338579232 has 48 divisors (see below), whose sum is σ = 193487525280. Its totient is φ = 22112859456.

The previous prime is 66338579221. The next prime is 66338579233. The reversal of 66338579232 is 23297583366.

It is a happy number.

66338579232 is a `hidden beast` number, since 6 + 6 + 3 + 38 + 579 + 2 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (66338579233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38389518 + ... + 38391245.

It is an arithmetic number, because the mean of its divisors is an integer number (4030990110).

Almost surely, 2^66338579232 is an apocalyptic number.

It is an amenable number.

66338579232 is an abundant number, since it is smaller than the sum of its proper divisors (127148946048).

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

66338579232 is a wasteful number, since it uses less digits than its factorization.

66338579232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76780782 (or 76780768 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 54.

The spelling of 66338579232 in words is "sixty-six billion, three hundred thirty-eight million, five hundred seventy-nine thousand, two hundred thirty-two".