12999447552 has 528 divisors, whose sum is σ = 44352758400. Its totient is φ = 3381460992.

The previous prime is 12999447541. The next prime is 12999447563. The reversal of 12999447552 is 25574499921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12999447541) and next prime (12999447563).

It is a junction number, because it is equal to n+sod(n) for n = 12999447492 and 12999447501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178074588 + ... + 178074660.

Almost surely, 2^12999447552 is an apocalyptic number.

12999447552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12999447552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22176379200).

12999447552 is an abundant number, since it is smaller than the sum of its proper divisors (31353310848).

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

12999447552 is an equidigital number, since it uses as much as digits as its factorization.

12999447552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 98 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The spelling of 12999447552 in words is "twelve billion, nine hundred ninety-nine million, four hundred forty-seven thousand, five hundred fifty-two".