1000866793361 has 2 divisors, whose sum is σ = 1000866793362. Its totient is φ = 1000866793360.

The previous prime is 1000866793313. The next prime is 1000866793393. The reversal of 1000866793361 is 1633976680001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972750210961 + 28116582400 = 986281^2 + 167680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000866793361 - 2¹⁴ = 1000866776977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000866783361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500433396680 + 500433396681.

It is an arithmetic number, because the mean of its divisors is an integer number (500433396681).

Almost surely, 2^{1000866793361} is an apocalyptic number.

It is an amenable number.

1000866793361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000866793361 is an equidigital number, since it uses as much as digits as its factorization.

1000866793361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 1000866793361 in words is "one trillion, eight hundred sixty-six million, seven hundred ninety-three thousand, three hundred sixty-one".