13540613788136 has 8 divisors (see below), whose sum is σ = 25388650852770. Its totient is φ = 6770306894064.

The previous prime is 13540613788133. The next prime is 13540613788147. The reversal of 13540613788136 is 63188731604531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11126027224900 + 2414586563236 = 3335570^2 + 1553894^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13540613788133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846288361751 + ... + 846288361766.

Almost surely, 2^{13540613788136} is an apocalyptic number.

It is an amenable number.

13540613788136 is a deficient number, since it is larger than the sum of its proper divisors (11848037064634).

13540613788136 is a wasteful number, since it uses less digits than its factorization.

13540613788136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692576723523 (or 1692576723519 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 13540613788136 in words is "thirteen trillion, five hundred forty billion, six hundred thirteen million, seven hundred eighty-eight thousand, one hundred thirty-six".