66266300660 has 24 divisors (see below), whose sum is σ = 159039121920. Its totient is φ = 22719874464.

The previous prime is 66266300641. The next prime is 66266300669. The reversal of 66266300660 is 6600366266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66266300669) 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, 236665220 + ... + 236665499.

It is an arithmetic number, because the mean of its divisors is an integer number (6626630080).

Almost surely, 2^66266300660 is an apocalyptic number.

It is an amenable number.

66266300660 is an abundant number, since it is smaller than the sum of its proper divisors (92772821260).

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

66266300660 is a wasteful number, since it uses less digits than its factorization.

66266300660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473330735 (or 473330733 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 66266300660 in words is "sixty-six billion, two hundred sixty-six million, three hundred thousand, six hundred sixty".