1262542680671 has 2 divisors, whose sum is σ = 1262542680672. Its totient is φ = 1262542680670.

The previous prime is 1262542680643. The next prime is 1262542680691. The reversal of 1262542680671 is 1760862452621.

It is a strong prime.

It is an emirp because it is prime and its reverse (1760862452621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1262542680671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262542680691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631271340335 + 631271340336.

It is an arithmetic number, because the mean of its divisors is an integer number (631271340336).

Almost surely, 2^{1262542680671} is an apocalyptic number.

1262542680671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262542680671 is an equidigital number, since it uses as much as digits as its factorization.

1262542680671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 1262542680671 in words is "one trillion, two hundred sixty-two billion, five hundred forty-two million, six hundred eighty thousand, six hundred seventy-one".