11640555135 has 72 divisors (see below), whose sum is σ = 22236461520. Its totient is φ = 5629029120.

The previous prime is 11640555127. The next prime is 11640555161. The reversal of 11640555135 is 53155504611.

11640555135 is a `hidden beast` number, since 1 + 1 + 640 + 5 + 5 + 5 + 1 + 3 + 5 = 666.

It is not a de Polignac number, because 11640555135 - 2³ = 11640555127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11640555135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2224392 + ... + 2229618.

Almost surely, 2^11640555135 is an apocalyptic number.

11640555135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11640555135 is a deficient number, since it is larger than the sum of its proper divisors (10595906385).

11640555135 is a wasteful number, since it uses less digits than its factorization.

11640555135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669 (or 5655 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 11640555135 in words is "eleven billion, six hundred forty million, five hundred fifty-five thousand, one hundred thirty-five".