12520783872 has 304 divisors, whose sum is σ = 39006952800. Its totient is φ = 3963617280.

The previous prime is 12520783867. The next prime is 12520783921. The reversal of 12520783872 is 27838702521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205258722 + ... + 205258782.

Almost surely, 2^12520783872 is an apocalyptic number.

12520783872 is a gapful number since it is divisible by the number (12) 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 12520783872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19503476400).

12520783872 is an abundant number, since it is smaller than the sum of its proper divisors (26486168928).

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

12520783872 is an frugal number, since it uses more digits than its factorization.

12520783872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 12520783872 in words is "twelve billion, five hundred twenty million, seven hundred eighty-three thousand, eight hundred seventy-two".