66759190884 has 27 divisors (see below), whose sum is σ = 168756318003. Its totient is φ = 22252546872.

The previous prime is 66759190847. The next prime is 66759190903. The reversal of 66759190884 is 48809195766.

The square root of 66759190884 is 258378.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1528737 + ... + 1571799.

Almost surely, 2^66759190884 is an apocalyptic number.

66759190884 is the 258378-th square number.

It is an amenable number.

66759190884 is an abundant number, since it is smaller than the sum of its proper divisors (101997127119).

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

66759190884 is an frugal number, since it uses more digits than its factorization.

66759190884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86136 (or 43068 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 66759190884 in words is "sixty-six billion, seven hundred fifty-nine million, one hundred ninety thousand, eight hundred eighty-four".