13641236406 has 80 divisors (see below), whose sum is σ = 34955784864. Its totient is φ = 3894967296.

The previous prime is 13641236383. The next prime is 13641236419. The reversal of 13641236406 is 60463214631.

13641236406 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 1 + 2 + 3 + 640 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2393296 + ... + 2398988.

Almost surely, 2^13641236406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13641236406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17477892432).

13641236406 is an abundant number, since it is smaller than the sum of its proper divisors (21314548458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13641236406 is a wasteful number, since it uses less digits than its factorization.

13641236406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7827 (or 7818 counting only the distinct ones).

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

It can be divided in two parts, 13641 and 236406, that added together give a cube (250047 = 63³).

The spelling of 13641236406 in words is "thirteen billion, six hundred forty-one million, two hundred thirty-six thousand, four hundred six".