66432818432 has 36 divisors (see below), whose sum is σ = 139585414080. Its totient is φ = 31468174848.

The previous prime is 66432818383. The next prime is 66432818437. The reversal of 66432818432 is 23481823466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66432818437) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6824168 + ... + 6833895.

Almost surely, 2^66432818432 is an apocalyptic number.

It is an amenable number.

66432818432 is an abundant number, since it is smaller than the sum of its proper divisors (73152595648).

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

66432818432 is a wasteful number, since it uses less digits than its factorization.

66432818432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13658098 (or 13658084 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 47.

The spelling of 66432818432 in words is "sixty-six billion, four hundred thirty-two million, eight hundred eighteen thousand, four hundred thirty-two".