12078449604 has 81 divisors (see below), whose sum is σ = 33084365223. Its totient is φ = 3713808384.

The previous prime is 12078449599. The next prime is 12078449633. The reversal of 12078449604 is 40694487021.

The square root of 12078449604 is 109902.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9221760900 + 2856688704 = 96030^2 + 53448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12078449604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8571652 + ... + 8573060.

Almost surely, 2^12078449604 is an apocalyptic number.

12078449604 is the 109902-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12078449604

12078449604 is an abundant number, since it is smaller than the sum of its proper divisors (21005915619).

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

12078449604 is a wasteful number, since it uses less digits than its factorization.

12078449604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 12078449604 in words is "twelve billion, seventy-eight million, four hundred forty-nine thousand, six hundred four".