12571181376 has 224 divisors, whose sum is σ = 36549421440. Its totient is φ = 3790209024.

The previous prime is 12571181341. The next prime is 12571181393. The reversal of 12571181376 is 67318117521.

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 31 ways as a sum of consecutive naturals, for example, 33169155 + ... + 33169533.

It is an arithmetic number, because the mean of its divisors is an integer number (163167060).

Almost surely, 2^12571181376 is an apocalyptic number.

12571181376 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 12571181376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18274710720).

12571181376 is an abundant number, since it is smaller than the sum of its proper divisors (23978240064).

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

12571181376 is a wasteful number, since it uses less digits than its factorization.

12571181376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 631 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

Adding to 12571181376 its reverse (67318117521), we get a palindrome (79889298897).

The spelling of 12571181376 in words is "twelve billion, five hundred seventy-one million, one hundred eighty-one thousand, three hundred seventy-six".