12573335661 has 16 divisors (see below), whose sum is σ = 16967270400. Its totient is φ = 8281366128.

The previous prime is 12573335653. The next prime is 12573335689. The reversal of 12573335661 is 16653337521.

It is not a de Polignac number, because 12573335661 - 2³ = 12573335653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12573335611) 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, 22020 + ... + 160098.

It is an arithmetic number, because the mean of its divisors is an integer number (1060454400).

Almost surely, 2^12573335661 is an apocalyptic number.

It is an amenable number.

12573335661 is a deficient number, since it is larger than the sum of its proper divisors (4393934739).

12573335661 is a wasteful number, since it uses less digits than its factorization.

12573335661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138448.

The product of its digits is 340200, while the sum is 42.

The spelling of 12573335661 in words is "twelve billion, five hundred seventy-three million, three hundred thirty-five thousand, six hundred sixty-one".