1280760528667 has 2 divisors, whose sum is σ = 1280760528668. Its totient is φ = 1280760528666.

The previous prime is 1280760528583. The next prime is 1280760528679. The reversal of 1280760528667 is 7668250670821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1280760528667 - 2⁷ = 1280760528539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1280760528767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640380264333 + 640380264334.

It is an arithmetic number, because the mean of its divisors is an integer number (640380264334).

Almost surely, 2^{1280760528667} is an apocalyptic number.

1280760528667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280760528667 is an equidigital number, since it uses as much as digits as its factorization.

1280760528667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 1280760528667 in words is "one trillion, two hundred eighty billion, seven hundred sixty million, five hundred twenty-eight thousand, six hundred sixty-seven".