12521828834 has 8 divisors (see below), whose sum is σ = 18993785580. Its totient is φ = 6190566976.

The previous prime is 12521828821. The next prime is 12521828857. The reversal of 12521828834 is 43882812521.

It can be written as a sum of positive squares in 2 ways, for example, as 12465052609 + 56776225 = 111647^2 + 7535^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35173499 + ... + 35173854.

Almost surely, 2^12521828834 is an apocalyptic number.

12521828834 is a deficient number, since it is larger than the sum of its proper divisors (6471956746).

12521828834 is an equidigital number, since it uses as much as digits as its factorization.

12521828834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70347444.

The product of its digits is 245760, while the sum is 44.

The spelling of 12521828834 in words is "twelve billion, five hundred twenty-one million, eight hundred twenty-eight thousand, eight hundred thirty-four".