1000866793273 has 2 divisors, whose sum is σ = 1000866793274.
Its totient is φ = 1000866793272.
The previous prime is 1000866793271. The next prime is 1000866793313. The reversal of 1000866793273 is 3723976680001.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 938470750009 + 62396043264 = 968747^2 + 249792^2
It is a cyclic number.
It is not a de Polignac number, because 1000866793273 - 21 = 1000866793271 is a prime.
Together with 1000866793271, it forms a pair of twin primes.
It is a self number, because there is not a number n which added to its sum of digits gives 1000866793273.
It is not a weakly prime, because it can be changed into another prime (1000866793271) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500433396636 + 500433396637.
It is an arithmetic number, because the mean of its divisors is an integer number (500433396637).
Almost surely, 21000866793273 is an apocalyptic number.
It is an amenable number.
1000866793273 is a deficient number, since it is larger than the sum of its proper divisors (1).
1000866793273 is an equidigital number, since it uses as much as digits as its factorization.
1000866793273 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2286144, while the sum is 52.
The spelling of 1000866793273 in words is "one trillion, eight hundred sixty-six million, seven hundred ninety-three thousand, two hundred seventy-three".