12991480442880 has 416 divisors, whose sum is σ = 42576225626880. Its totient is φ = 3380497612800.

The previous prime is 12991480442869. The next prime is 12991480442891. The reversal of 12991480442880 is 8824408419921.

It is an interprime number because it is at equal distance from previous prime (12991480442869) and next prime (12991480442891).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3833424226 + ... + 3833427614.

Almost surely, 2^{12991480442880} is an apocalyptic number.

12991480442880 is a gapful number since it is divisible by the number (10) 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 12991480442880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21288112813440).

12991480442880 is an abundant number, since it is smaller than the sum of its proper divisors (29584745184000).

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

12991480442880 is a wasteful number, since it uses less digits than its factorization.

12991480442880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915 (or 4893 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 12991480442880 in words is "twelve trillion, nine hundred ninety-one billion, four hundred eighty million, four hundred forty-two thousand, eight hundred eighty".