12564004841476 has 135 divisors (see below), whose sum is σ = 24600374567685. Its totient is φ = 5614605216000.

The previous prime is 12564004841447. The next prime is 12564004841501. The reversal of 12564004841476 is 67414840046521.

It is a happy number.

The square root of 12564004841476 is 3544574.

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

It can be written as a sum of positive squares in only one way, i.e., 5641717552900 + 6922287288576 = 2375230^2 + 2631024^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 83205330001 + ... + 83205330151.

Almost surely, 2^{12564004841476} is an apocalyptic number.

12564004841476 is the 3544574-th square number.

It is an amenable number.

12564004841476 is a deficient number, since it is larger than the sum of its proper divisors (12036369726209).

12564004841476 is an frugal number, since it uses more digits than its factorization.

12564004841476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 52.

Adding to 12564004841476 its reverse (67414840046521), we get a palindrome (79978844887997).

The spelling of 12564004841476 in words is "twelve trillion, five hundred sixty-four billion, four million, eight hundred forty-one thousand, four hundred seventy-six".