12760478581 has 2 divisors, whose sum is σ = 12760478582. Its totient is φ = 12760478580.

The previous prime is 12760478573. The next prime is 12760478597. The reversal of 12760478581 is 18587406721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9966827556 + 2793651025 = 99834^2 + 52855^2 .

It is a cyclic number.

It is not a de Polignac number, because 12760478581 - 2³ = 12760478573 is a prime.

It is a super-3 number, since 3×12760478581³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12760478531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6380239290 + 6380239291.

It is an arithmetic number, because the mean of its divisors is an integer number (6380239291).

Almost surely, 2^12760478581 is an apocalyptic number.

It is an amenable number.

12760478581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12760478581 is an equidigital number, since it uses as much as digits as its factorization.

12760478581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 12760478581 in words is "twelve billion, seven hundred sixty million, four hundred seventy-eight thousand, five hundred eighty-one".