12651800832 has 252 divisors, whose sum is σ = 41312829264. Its totient is φ = 3833256960.

The previous prime is 12651800773. The next prime is 12651800849. The reversal of 12651800832 is 23800815621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 27 ways as a sum of consecutive naturals, for example, 2049783 + ... + 2055945.

Almost surely, 2^12651800832 is an apocalyptic number.

12651800832 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 12651800832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20656414632).

12651800832 is an abundant number, since it is smaller than the sum of its proper divisors (28661028432).

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

12651800832 is an frugal number, since it uses more digits than its factorization.

12651800832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208 (or 6179 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 12651800832 in words is "twelve billion, six hundred fifty-one million, eight hundred thousand, eight hundred thirty-two".