11645561135138 has 48 divisors (see below), whose sum is σ = 21205041223104. Its totient is φ = 4773679051680.

The previous prime is 11645561135129. The next prime is 11645561135177. The reversal of 11645561135138 is 83153116554611.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41122868 + ... + 41405088.

It is an arithmetic number, because the mean of its divisors is an integer number (441771692148).

Almost surely, 2^{11645561135138} is an apocalyptic number.

11645561135138 is a deficient number, since it is larger than the sum of its proper divisors (9559480087966).

11645561135138 is a wasteful number, since it uses less digits than its factorization.

11645561135138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300567 (or 300560 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 50.

Adding to 11645561135138 its reverse (83153116554611), we get a palindrome (94798677689749).

The spelling of 11645561135138 in words is "eleven trillion, six hundred forty-five billion, five hundred sixty-one million, one hundred thirty-five thousand, one hundred thirty-eight".