66408743512336 has 45 divisors (see below), whose sum is σ = 132953398679223. Its totient is φ = 32132774040480.

The previous prime is 66408743512231. The next prime is 66408743512339. The reversal of 66408743512336 is 63321534780466.

It is a happy number.

The square root of 66408743512336 is 8149156.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (66408743512339) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1010462485 + ... + 1010528203.

Almost surely, 2^{66408743512336} is an apocalyptic number.

66408743512336 is the 8149156-th square number.

It is an amenable number.

66408743512336 is an abundant number, since it is smaller than the sum of its proper divisors (66544655166887).

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

66408743512336 is an frugal number, since it uses more digits than its factorization.

66408743512336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131508 (or 65752 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 58.

The spelling of 66408743512336 in words is "sixty-six trillion, four hundred eight billion, seven hundred forty-three million, five hundred twelve thousand, three hundred thirty-six".