66052506868 has 12 divisors (see below), whose sum is σ = 119320657792. Its totient is φ = 31960890360.

The previous prime is 66052506859. The next prime is 66052506881. The reversal of 66052506868 is 86860525066.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266340630 + ... + 266340877.

Almost surely, 2^66052506868 is an apocalyptic number.

It is an amenable number.

66052506868 is a deficient number, since it is larger than the sum of its proper divisors (53268150924).

66052506868 is a wasteful number, since it uses less digits than its factorization.

66052506868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532681542 (or 532681540 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 66052506868 in words is "sixty-six billion, fifty-two million, five hundred six thousand, eight hundred sixty-eight".