11512919223 has 144 divisors (see below), whose sum is σ = 19920569760. Its totient is φ = 6361265664.

The previous prime is 11512919219. The next prime is 11512919239. The reversal of 11512919223 is 32291921511.

It is not a de Polignac number, because 11512919223 - 2² = 11512919219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11512919203) 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 143 ways as a sum of consecutive naturals, for example, 82826688 + ... + 82826826.

It is an arithmetic number, because the mean of its divisors is an integer number (138337290).

Almost surely, 2^11512919223 is an apocalyptic number.

11512919223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11512919223 is a deficient number, since it is larger than the sum of its proper divisors (8407650537).

11512919223 is a wasteful number, since it uses less digits than its factorization.

11512919223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 264 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The spelling of 11512919223 in words is "eleven billion, five hundred twelve million, nine hundred nineteen thousand, two hundred twenty-three".