12446689519 has 8 divisors (see below), whose sum is σ = 14376925008. Its totient is φ = 10649573760.

The previous prime is 12446689511. The next prime is 12446689543. The reversal of 12446689519 is 91598664421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12446689519 - 2³ = 12446689511 is a prime.

It is a super-2 number, since 2×12446689519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12446689519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446689511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33279732 + ... + 33280105.

It is an arithmetic number, because the mean of its divisors is an integer number (1797115626).

Almost surely, 2^12446689519 is an apocalyptic number.

12446689519 is a deficient number, since it is larger than the sum of its proper divisors (1930235489).

12446689519 is a wasteful number, since it uses less digits than its factorization.

12446689519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66559865.

The product of its digits is 3732480, while the sum is 55.

The spelling of 12446689519 in words is "twelve billion, four hundred forty-six million, six hundred eighty-nine thousand, five hundred nineteen".