66244569601 has 16 divisors (see below), whose sum is σ = 77782291200. Its totient is φ = 55226508480.

The previous prime is 66244569593. The next prime is 66244569619. The reversal of 66244569601 is 10696544266.

It is a cyclic number.

It is not a de Polignac number, because 66244569601 - 2³ = 66244569593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66244569691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696300 + ... + 785698.

It is an arithmetic number, because the mean of its divisors is an integer number (4861393200).

Almost surely, 2^66244569601 is an apocalyptic number.

It is an amenable number.

66244569601 is a deficient number, since it is larger than the sum of its proper divisors (11537721599).

66244569601 is a wasteful number, since it uses less digits than its factorization.

66244569601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92304.

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

The spelling of 66244569601 in words is "sixty-six billion, two hundred forty-four million, five hundred sixty-nine thousand, six hundred one".