12817409807 has 2 divisors, whose sum is σ = 12817409808. Its totient is φ = 12817409806.

The previous prime is 12817409753. The next prime is 12817409827. The reversal of 12817409807 is 70890471821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12817409807 - 2¹⁰ = 12817408783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12817409827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408704903 + 6408704904.

It is an arithmetic number, because the mean of its divisors is an integer number (6408704904).

Almost surely, 2^12817409807 is an apocalyptic number.

12817409807 is a deficient number, since it is larger than the sum of its proper divisors (1).

12817409807 is an equidigital number, since it uses as much as digits as its factorization.

12817409807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 12817409807 in words is "twelve billion, eight hundred seventeen million, four hundred nine thousand, eight hundred seven".