12550111530 has 96 divisors (see below), whose sum is σ = 33436174464. Its totient is φ = 3012240000.

The previous prime is 12550111523. The next prime is 12550111531. The reversal of 12550111530 is 3511105521.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12550111530.

It is not an unprimeable number, because it can be changed into a prime (12550111531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349515 + ... + 383745.

It is an arithmetic number, because the mean of its divisors is an integer number (348293484).

Almost surely, 2^12550111530 is an apocalyptic number.

12550111530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12550111530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16718087232).

12550111530 is an abundant number, since it is smaller than the sum of its proper divisors (20886062934).

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

12550111530 is a wasteful number, since it uses less digits than its factorization.

12550111530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34364 (or 34353 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 12550111530 in words is "twelve billion, five hundred fifty million, one hundred eleven thousand, five hundred thirty".