6398866760873 has 2 divisors, whose sum is σ = 6398866760874. Its totient is φ = 6398866760872.

The previous prime is 6398866760809. The next prime is 6398866760879. The reversal of 6398866760873 is 3780676688936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4533203073424 + 1865663687449 = 2129132^2 + 1365893^2 .

It is a cyclic number.

It is not a de Polignac number, because 6398866760873 - 2⁶ = 6398866760809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6398866760794 and 6398866760803.

It is not a weakly prime, because it can be changed into another prime (6398866760879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199433380436 + 3199433380437.

It is an arithmetic number, because the mean of its divisors is an integer number (3199433380437).

Almost surely, 2^{6398866760873} is an apocalyptic number.

It is an amenable number.

6398866760873 is a deficient number, since it is larger than the sum of its proper divisors (1).

6398866760873 is an equidigital number, since it uses as much as digits as its factorization.

6398866760873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2633637888, while the sum is 77.

The spelling of 6398866760873 in words is "six trillion, three hundred ninety-eight billion, eight hundred sixty-six million, seven hundred sixty thousand, eight hundred seventy-three".