11853316809 has 12 divisors (see below), whose sum is σ = 17402138052. Its totient is φ = 7772666400.

The previous prime is 11853316807. The next prime is 11853316843. The reversal of 11853316809 is 90861335811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5072288400 + 6781028409 = 71220^2 + 82347^2 .

It is not a de Polignac number, because 11853316809 - 2¹ = 11853316807 is a prime.

It is a super-2 number, since 2×11853316809² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11853316807) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10794822 + ... + 10795919.

It is an arithmetic number, because the mean of its divisors is an integer number (1450178171).

Almost surely, 2^11853316809 is an apocalyptic number.

It is an amenable number.

11853316809 is a deficient number, since it is larger than the sum of its proper divisors (5548821243).

11853316809 is a wasteful number, since it uses less digits than its factorization.

11853316809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21590808 (or 21590805 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11853316809 in words is "eleven billion, eight hundred fifty-three million, three hundred sixteen thousand, eight hundred nine".