66705360888 has 32 divisors (see below), whose sum is σ = 166773634560. Its totient is φ = 22233756000.

The previous prime is 66705360877. The next prime is 66705360923. The reversal of 66705360888 is 88806350766.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

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, 361881 + ... + 514167.

It is an arithmetic number, because the mean of its divisors is an integer number (5211676080).

Almost surely, 2^66705360888 is an apocalyptic number.

It is an amenable number.

66705360888 is an abundant number, since it is smaller than the sum of its proper divisors (100068273672).

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

66705360888 is a wasteful number, since it uses less digits than its factorization.

66705360888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170547 (or 170543 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 66705360888 in words is "sixty-six billion, seven hundred five million, three hundred sixty thousand, eight hundred eighty-eight".