12805454690767 has 2 divisors, whose sum is σ = 12805454690768. Its totient is φ = 12805454690766.

The previous prime is 12805454690737. The next prime is 12805454690789. The reversal of 12805454690767 is 76709645450821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12805454690767 - 2¹⁵ = 12805454657999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12805454690699 and 12805454690708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12805454690737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402727345383 + 6402727345384.

It is an arithmetic number, because the mean of its divisors is an integer number (6402727345384).

Almost surely, 2^{12805454690767} is an apocalyptic number.

12805454690767 is a deficient number, since it is larger than the sum of its proper divisors (1).

12805454690767 is an equidigital number, since it uses as much as digits as its factorization.

12805454690767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 12805454690767 in words is "twelve trillion, eight hundred five billion, four hundred fifty-four million, six hundred ninety thousand, seven hundred sixty-seven".