12573636661 has 8 divisors (see below), whose sum is σ = 12719843424. Its totient is φ = 12427961520.

The previous prime is 12573636653. The next prime is 12573636671. The reversal of 12573636661 is 16663637521.

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 12573636661 - 2³ = 12573636653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12573636671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85230 + ... + 180031.

It is an arithmetic number, because the mean of its divisors is an integer number (1589980428).

Almost surely, 2^12573636661 is an apocalyptic number.

It is an amenable number.

12573636661 is a deficient number, since it is larger than the sum of its proper divisors (146206763).

12573636661 is a wasteful number, since it uses less digits than its factorization.

12573636661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265811.

The product of its digits is 816480, while the sum is 46.

The spelling of 12573636661 in words is "twelve billion, five hundred seventy-three million, six hundred thirty-six thousand, six hundred sixty-one".