66675984336 has 60 divisors (see below), whose sum is σ = 200954013988. Its totient is φ = 20515686912.

The previous prime is 66675984313. The next prime is 66675984337. The reversal of 66675984336 is 63348957666.

It is a happy number.

66675984336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32236047936 + 34439936400 = 179544^2 + 185580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66675984337) 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, 17806885 + ... + 17810628.

Almost surely, 2^66675984336 is an apocalyptic number.

It is an amenable number.

66675984336 is an abundant number, since it is smaller than the sum of its proper divisors (134278029652).

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

66675984336 is a wasteful number, since it uses less digits than its factorization.

66675984336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35617540 (or 35617531 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 63.

The spelling of 66675984336 in words is "sixty-six billion, six hundred seventy-five million, nine hundred eighty-four thousand, three hundred thirty-six".