13632426261 has 24 divisors (see below), whose sum is σ = 21287882720. Its totient is φ = 8377248096.

The previous prime is 13632426239. The next prime is 13632426277. The reversal of 13632426261 is 16262423631.

13632426261 is a `hidden beast` number, since 1 + 3 + 6 + 3 + 24 + 2 + 626 + 1 = 666.

It is not a de Polignac number, because 13632426261 - 2⁷ = 13632426133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13632426961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1070995 + ... + 1083648.

Almost surely, 2^13632426261 is an apocalyptic number.

It is an amenable number.

13632426261 is a deficient number, since it is larger than the sum of its proper divisors (7655456459).

13632426261 is a wasteful number, since it uses less digits than its factorization.

13632426261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154705 (or 2154702 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

Adding to 13632426261 its reverse (16262423631), we get a palindrome (29894849892).

The spelling of 13632426261 in words is "thirteen billion, six hundred thirty-two million, four hundred twenty-six thousand, two hundred sixty-one".