66708655268 has 24 divisors (see below), whose sum is σ = 124648738368. Its totient is φ = 31162180896.

The previous prime is 66708655259. The next prime is 66708655271. The reversal of 66708655268 is 86255680766.

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, 8427371 + ... + 8435282.

It is an arithmetic number, because the mean of its divisors is an integer number (5193697432).

Almost surely, 2^66708655268 is an apocalyptic number.

It is an amenable number.

66708655268 is a deficient number, since it is larger than the sum of its proper divisors (57940083100).

66708655268 is a wasteful number, since it uses less digits than its factorization.

66708655268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16862723 (or 16862721 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 66708655268 in words is "sixty-six billion, seven hundred eight million, six hundred fifty-five thousand, two hundred sixty-eight".