11811449012 has 12 divisors (see below), whose sum is σ = 22549130016. Its totient is φ = 5368840440.

The previous prime is 11811448993. The next prime is 11811449033. The reversal of 11811449012 is 21094411811.

It is a super-2 number, since 2×11811449012² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11811449012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134220968 + ... + 134221055.

It is an arithmetic number, because the mean of its divisors is an integer number (1879094168).

Almost surely, 2^11811449012 is an apocalyptic number.

It is an amenable number.

11811449012 is a deficient number, since it is larger than the sum of its proper divisors (10737681004).

11811449012 is a wasteful number, since it uses less digits than its factorization.

11811449012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268442038 (or 268442036 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 11811449012 in words is "eleven billion, eight hundred eleven million, four hundred forty-nine thousand, twelve".