12503844522 has 144 divisors (see below), whose sum is σ = 32344341120. Its totient is φ = 3463156224.

The previous prime is 12503844517. The next prime is 12503844533. The reversal of 12503844522 is 22544830521.

12503844522 is a `hidden beast` number, since 1 + 2 + 50 + 3 + 84 + 4 + 522 = 666.

It is a super-2 number, since 2×12503844522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1551379 + ... + 1559417.

It is an arithmetic number, because the mean of its divisors is an integer number (224613480).

Almost surely, 2^12503844522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12503844522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16172170560).

12503844522 is an abundant number, since it is smaller than the sum of its proper divisors (19840496598).

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

12503844522 is a wasteful number, since it uses less digits than its factorization.

12503844522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8117 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 12503844522 in words is "twelve billion, five hundred three million, eight hundred forty-four thousand, five hundred twenty-two".