66668532601 has 8 divisors (see below), whose sum is σ = 72814581504. Its totient is φ = 60536695920.

The previous prime is 66668532577. The next prime is 66668532653. The reversal of 66668532601 is 10623586666.

66668532601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66668532601 - 2⁵ = 66668532569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66668530601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3543241 + ... + 3562006.

It is an arithmetic number, because the mean of its divisors is an integer number (9101822688).

Almost surely, 2^66668532601 is an apocalyptic number.

It is an amenable number.

66668532601 is a deficient number, since it is larger than the sum of its proper divisors (6146048903).

66668532601 is a wasteful number, since it uses less digits than its factorization.

66668532601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106111.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 66668532601 in words is "sixty-six billion, six hundred sixty-eight million, five hundred thirty-two thousand, six hundred one".