12480778005851 has 2 divisors, whose sum is σ = 12480778005852. Its totient is φ = 12480778005850.

The previous prime is 12480778005811. The next prime is 12480778005863. The reversal of 12480778005851 is 15850087708421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15850087708421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12480778005851 - 2²⁶ = 12480710896987 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12480778005811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6240389002925 + 6240389002926.

It is an arithmetic number, because the mean of its divisors is an integer number (6240389002926).

Almost surely, 2^{12480778005851} is an apocalyptic number.

12480778005851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12480778005851 is an equidigital number, since it uses as much as digits as its factorization.

12480778005851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5017600, while the sum is 56.

The spelling of 12480778005851 in words is "twelve trillion, four hundred eighty billion, seven hundred seventy-eight million, five thousand, eight hundred fifty-one".