12219865903494 has 192 divisors, whose sum is σ = 29617603292160. Its totient is φ = 3628648717056.

The previous prime is 12219865903493. The next prime is 12219865903519. The reversal of 12219865903494 is 49430956891221.

12219865903494 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 9 + 8 + 6 + 590 + 34 + 9 + 4 = 666.

It is a super-3 number, since 3×12219865903494³ (a number of 40 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219865903493) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3372856567 + ... + 3372860189.

It is an arithmetic number, because the mean of its divisors is an integer number (154258350480).

Almost surely, 2^{12219865903494} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12219865903494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14808801646080).

12219865903494 is an abundant number, since it is smaller than the sum of its proper divisors (17397737388666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12219865903494 is a wasteful number, since it uses less digits than its factorization.

12219865903494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312 (or 5271 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 12219865903494 in words is "twelve trillion, two hundred nineteen billion, eight hundred sixty-five million, nine hundred three thousand, four hundred ninety-four".