12241997526 has 256 divisors, whose sum is σ = 30257971200. Its totient is φ = 3261772800.

The previous prime is 12241997519. The next prime is 12241997561. The reversal of 12241997526 is 62579914221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 137550490 + ... + 137550578.

It is an arithmetic number, because the mean of its divisors is an integer number (118195200).

Almost surely, 2^12241997526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12241997526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15128985600).

12241997526 is an abundant number, since it is smaller than the sum of its proper divisors (18015973674).

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

12241997526 is a wasteful number, since it uses less digits than its factorization.

12241997526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its digits is 544320, while the sum is 48.

The spelling of 12241997526 in words is "twelve billion, two hundred forty-one million, nine hundred ninety-seven thousand, five hundred twenty-six".