12908491776 has 220 divisors, whose sum is σ = 40581038080. Its totient is φ = 4075868160.

The previous prime is 12908491639. The next prime is 12908491787. The reversal of 12908491776 is 67719480921.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 19 ways as a sum of consecutive naturals, for example, 1571841 + ... + 1580031.

It is an arithmetic number, because the mean of its divisors is an integer number (184459264).

Almost surely, 2^12908491776 is an apocalyptic number.

12908491776 is a gapful number since it is divisible by the number (16) 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 12908491776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20290519040).

12908491776 is an abundant number, since it is smaller than the sum of its proper divisors (27672546304).

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

12908491776 is an equidigital number, since it uses as much as digits as its factorization.

12908491776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242 (or 8215 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 12908491776 in words is "twelve billion, nine hundred eight million, four hundred ninety-one thousand, seven hundred seventy-six".