66985060268 has 24 divisors (see below), whose sum is σ = 133992499200. Its totient is φ = 28703087568.

The previous prime is 66985060249. The next prime is 66985060333. The reversal of 66985060268 is 86206058966.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26558 + ... + 366981.

It is an arithmetic number, because the mean of its divisors is an integer number (5583020800).

Almost surely, 2^66985060268 is an apocalyptic number.

It is an amenable number.

66985060268 is an abundant number, since it is smaller than the sum of its proper divisors (67007438932).

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

66985060268 is a wasteful number, since it uses less digits than its factorization.

66985060268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399629 (or 399627 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 66985060268 in words is "sixty-six billion, nine hundred eighty-five million, sixty thousand, two hundred sixty-eight".