66380726332 has 12 divisors (see below), whose sum is σ = 116193335440. Its totient is φ = 33182630496.

The previous prime is 66380726329. The next prime is 66380726381. The reversal of 66380726332 is 23362708366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913832 + ... + 1948207.

Almost surely, 2^66380726332 is an apocalyptic number.

It is an amenable number.

66380726332 is a deficient number, since it is larger than the sum of its proper divisors (49812609108).

66380726332 is a wasteful number, since it uses less digits than its factorization.

66380726332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866340 (or 3866338 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 66380726332 in words is "sixty-six billion, three hundred eighty million, seven hundred twenty-six thousand, three hundred thirty-two".