66635054528 has 112 divisors (see below), whose sum is σ = 159178752000. Its totient is φ = 27636376320.

The previous prime is 66635054501. The next prime is 66635054539. The reversal of 66635054528 is 82545053666.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 631553 + ... + 729471.

Almost surely, 2^66635054528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66635054528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79589376000).

66635054528 is an abundant number, since it is smaller than the sum of its proper divisors (92543697472).

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

66635054528 is an equidigital number, since it uses as much as digits as its factorization.

66635054528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97983 (or 97959 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 66635054528 in words is "sixty-six billion, six hundred thirty-five million, fifty-four thousand, five hundred twenty-eight".