12005451519 has 16 divisors (see below), whose sum is σ = 16774947072. Its totient is φ = 7622783168.

The previous prime is 12005451517. The next prime is 12005451553. The reversal of 12005451519 is 91515450021.

It is a cyclic number.

It is not a de Polignac number, because 12005451519 - 2¹ = 12005451517 is a prime.

It is a super-2 number, since 2×12005451519² (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 12005451519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005451517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357297 + ... + 389450.

It is an arithmetic number, because the mean of its divisors is an integer number (1048434192).

Almost surely, 2^12005451519 is an apocalyptic number.

12005451519 is a deficient number, since it is larger than the sum of its proper divisors (4769495553).

12005451519 is a wasteful number, since it uses less digits than its factorization.

12005451519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747006.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 12005451519 in words is "twelve billion, five million, four hundred fifty-one thousand, five hundred nineteen".