66732506132768 has 96 divisors (see below), whose sum is σ = 151612915394304. Its totient is φ = 28320666181632.

The previous prime is 66732506132731. The next prime is 66732506132839. The reversal of 66732506132768 is 86723160523766.

It is a self number, because there is not a number n which added to its sum of digits gives 66732506132768.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623282696 + ... + 623389752.

It is an arithmetic number, because the mean of its divisors is an integer number (1579301202024).

Almost surely, 2^{66732506132768} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66732506132768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75806457697152).

66732506132768 is an abundant number, since it is smaller than the sum of its proper divisors (84880409261536).

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

66732506132768 is a wasteful number, since it uses less digits than its factorization.

66732506132768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134194 (or 134186 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 66732506132768 in words is "sixty-six trillion, seven hundred thirty-two billion, five hundred six million, one hundred thirty-two thousand, seven hundred sixty-eight".