13405040136 has 64 divisors (see below), whose sum is σ = 38855203200. Its totient is φ = 4274069184.

The previous prime is 13405040101. The next prime is 13405040149. The reversal of 13405040136 is 63104050431.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344171 + ... + 1354106.

It is an arithmetic number, because the mean of its divisors is an integer number (607112550).

Almost surely, 2^13405040136 is an apocalyptic number.

It is an amenable number.

13405040136 is an abundant number, since it is smaller than the sum of its proper divisors (25450163064).

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

13405040136 is a wasteful number, since it uses less digits than its factorization.

13405040136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698315 (or 2698305 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 13405040136 its reverse (63104050431), we get a palindrome (76509090567).

The spelling of 13405040136 in words is "thirteen billion, four hundred five million, forty thousand, one hundred thirty-six".