12521503364 has 12 divisors (see below), whose sum is σ = 21919464924. Its totient is φ = 6258799104.

The previous prime is 12521503363. The next prime is 12521503369. The reversal of 12521503364 is 46330512521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4393038400 + 8128464964 = 66280^2 + 90158^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12521503364.

It is not an unprimeable number, because it can be changed into a prime (12521503363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473669 + ... + 499404.

It is an arithmetic number, because the mean of its divisors is an integer number (1826622077).

Almost surely, 2^12521503364 is an apocalyptic number.

It is an amenable number.

12521503364 is a deficient number, since it is larger than the sum of its proper divisors (9397961560).

12521503364 is a wasteful number, since it uses less digits than its factorization.

12521503364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976294 (or 976292 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 12521503364 in words is "twelve billion, five hundred twenty-one million, five hundred three thousand, three hundred sixty-four".