12988250520 has 128 divisors (see below), whose sum is σ = 45141373440. Its totient is φ = 2928061440.

The previous prime is 12988250497. The next prime is 12988250521. The reversal of 12988250520 is 2505288921.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12988250521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44586 + ... + 167225.

It is an arithmetic number, because the mean of its divisors is an integer number (352666980).

Almost surely, 2^12988250520 is an apocalyptic number.

12988250520 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 12988250520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22570686720).

12988250520 is an abundant number, since it is smaller than the sum of its proper divisors (32153122920).

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

12988250520 is a wasteful number, since it uses less digits than its factorization.

12988250520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211905 (or 211901 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 12988250520 in words is "twelve billion, nine hundred eighty-eight million, two hundred fifty thousand, five hundred twenty".