11909286135 has 24 divisors (see below), whose sum is σ = 20661838080. Its totient is φ = 6345749952.

The previous prime is 11909286133. The next prime is 11909286143. The reversal of 11909286135 is 53168290911.

11909286135 is a `hidden beast` number, since 1 + 1 + 9 + 0 + 9 + 28 + 613 + 5 = 666.

It is not a de Polignac number, because 11909286135 - 2¹ = 11909286133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11909286133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72820 + ... + 170649.

It is an arithmetic number, because the mean of its divisors is an integer number (860909920).

Almost surely, 2^11909286135 is an apocalyptic number.

11909286135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11909286135 is a deficient number, since it is larger than the sum of its proper divisors (8752551945).

11909286135 is a wasteful number, since it uses less digits than its factorization.

11909286135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244567 (or 244564 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 11909286135 in words is "eleven billion, nine hundred nine million, two hundred eighty-six thousand, one hundred thirty-five".