13641236405 has 32 divisors (see below), whose sum is σ = 17565120000. Its totient is φ = 10143505152.

The previous prime is 13641236383. The next prime is 13641236419. The reversal of 13641236405 is 50463214631.

It is a cyclic number.

It is not a de Polignac number, because 13641236405 - 2²⁸ = 13372800949 is a prime.

It is a super-3 number, since 3×13641236405³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4547096 + ... + 4550094.

It is an arithmetic number, because the mean of its divisors is an integer number (548910000).

Almost surely, 2^13641236405 is an apocalyptic number.

It is an amenable number.

13641236405 is a deficient number, since it is larger than the sum of its proper divisors (3923883595).

13641236405 is a wasteful number, since it uses less digits than its factorization.

13641236405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 13641236405 in words is "thirteen billion, six hundred forty-one million, two hundred thirty-six thousand, four hundred five".