12785277184 has 81 divisors (see below), whose sum is σ = 26367043521. Its totient is φ = 6187299840.

The previous prime is 12785277163. The next prime is 12785277223. The reversal of 12785277184 is 48177258721.

It is a happy number.

The square root of 12785277184 is 113072.

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., 11440441600 + 1344835584 = 106960^2 + 36672^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66938529 + ... + 66938719.

Almost surely, 2^12785277184 is an apocalyptic number.

12785277184 is the 113072-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12785277184

12785277184 is an abundant number, since it is smaller than the sum of its proper divisors (13581766337).

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

12785277184 is an frugal number, since it uses more digits than its factorization.

12785277184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 230 counting only the distinct ones).

The product of its digits is 1756160, while the sum is 52.

The spelling of 12785277184 in words is "twelve billion, seven hundred eighty-five million, two hundred seventy-seven thousand, one hundred eighty-four".