66260646264 has 16 divisors (see below), whose sum is σ = 165651615720. Its totient is φ = 22086882080.

The previous prime is 66260646253. The next prime is 66260646271. The reversal of 66260646264 is 46264606266.

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, 1380430107 + ... + 1380430154.

Almost surely, 2^66260646264 is an apocalyptic number.

It is an amenable number.

66260646264 is an abundant number, since it is smaller than the sum of its proper divisors (99390969456).

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

66260646264 is a wasteful number, since it uses less digits than its factorization.

66260646264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760860270 (or 2760860266 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 66260646264 in words is "sixty-six billion, two hundred sixty million, six hundred forty-six thousand, two hundred sixty-four".