12613555233 has 6 divisors (see below), whose sum is σ = 18219579794. Its totient is φ = 8409036816.

The previous prime is 12613555159. The next prime is 12613555243. The reversal of 12613555233 is 33255531621.

12613555233 is a `hidden beast` number, since 1 + 2 + 613 + 5 + 5 + 5 + 2 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12465275904 + 148279329 = 111648^2 + 12177^2 .

It is not a de Polignac number, because 12613555233 - 2⁸ = 12613554977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12613555243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 700753060 + ... + 700753077.

Almost surely, 2^12613555233 is an apocalyptic number.

It is an amenable number.

12613555233 is a deficient number, since it is larger than the sum of its proper divisors (5606024561).

12613555233 is a wasteful number, since it uses less digits than its factorization.

12613555233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401506143 (or 1401506140 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The spelling of 12613555233 in words is "twelve billion, six hundred thirteen million, five hundred fifty-five thousand, two hundred thirty-three".