66560751528 has 16 divisors (see below), whose sum is σ = 166401878880. Its totient is φ = 22186917168.

The previous prime is 66560751469. The next prime is 66560751533. The reversal of 66560751528 is 82515706566.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1386682300 + ... + 1386682347.

It is an arithmetic number, because the mean of its divisors is an integer number (10400117430).

Almost surely, 2^66560751528 is an apocalyptic number.

It is an amenable number.

66560751528 is an abundant number, since it is smaller than the sum of its proper divisors (99841127352).

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

66560751528 is a wasteful number, since it uses less digits than its factorization.

66560751528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773364656 (or 2773364652 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 66560751528 in words is "sixty-six billion, five hundred sixty million, seven hundred fifty-one thousand, five hundred twenty-eight".