12496638443520 has 2304 divisors, whose sum is σ = 53981090537472. Its totient is φ = 2391759912960.

The previous prime is 12496638443501. The next prime is 12496638443533. The reversal of 12496638443520 is 2534483669421.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 128831324112 + ... + 128831324208.

It is an arithmetic number, because the mean of its divisors is an integer number (23429292768).

Almost surely, 2^{12496638443520} is an apocalyptic number.

12496638443520 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 12496638443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26990545268736).

12496638443520 is an abundant number, since it is smaller than the sum of its proper divisors (41484452093952).

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

12496638443520 is an equidigital number, since it uses as much as digits as its factorization.

12496638443520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 57.

The spelling of 12496638443520 in words is "twelve trillion, four hundred ninety-six billion, six hundred thirty-eight million, four hundred forty-three thousand, five hundred twenty".