66328262527776 has 48 divisors (see below), whose sum is σ = 174112450190784. Its totient is φ = 22109324200704.

The previous prime is 66328262527771. The next prime is 66328262527789. The reversal of 66328262527776 is 67772526282366.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 66328262527776.

It is not an unprimeable number, because it can be changed into a prime (66328262527771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22553886 + ... + 25324578.

It is an arithmetic number, because the mean of its divisors is an integer number (3627342712308).

Almost surely, 2^{66328262527776} is an apocalyptic number.

It is an amenable number.

66328262527776 is an abundant number, since it is smaller than the sum of its proper divisors (107784187663008).

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

66328262527776 is a wasteful number, since it uses less digits than its factorization.

66328262527776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020073 (or 3020065 counting only the distinct ones).

The product of its digits is 853493760, while the sum is 69.

The spelling of 66328262527776 in words is "sixty-six trillion, three hundred twenty-eight billion, two hundred sixty-two million, five hundred twenty-seven thousand, seven hundred seventy-six".