12999473452 has 48 divisors (see below), whose sum is σ = 26512557120. Its totient is φ = 5461327872.

The previous prime is 12999473449. The next prime is 12999473471. The reversal of 12999473452 is 25437499921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12999473393 and 12999473402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087848 + ... + 2094064.

It is an arithmetic number, because the mean of its divisors is an integer number (552344940).

Almost surely, 2^12999473452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12999473452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13256278560).

12999473452 is an abundant number, since it is smaller than the sum of its proper divisors (13513083668).

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

12999473452 is a wasteful number, since it uses less digits than its factorization.

12999473452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690 (or 7688 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 55.

The spelling of 12999473452 in words is "twelve billion, nine hundred ninety-nine million, four hundred seventy-three thousand, four hundred fifty-two".