6381388193797 has 2 divisors, whose sum is σ = 6381388193798. Its totient is φ = 6381388193796.

The previous prime is 6381388193737. The next prime is 6381388193801. The reversal of 6381388193797 is 7973918831836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4666770793441 + 1714617400356 = 2160271^2 + 1309434^2 .

It is a cyclic number.

It is not a de Polignac number, because 6381388193797 - 2⁷ = 6381388193669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6381388193737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190694096898 + 3190694096899.

It is an arithmetic number, because the mean of its divisors is an integer number (3190694096899).

Almost surely, 2^{6381388193797} is an apocalyptic number.

It is an amenable number.

6381388193797 is a deficient number, since it is larger than the sum of its proper divisors (1).

6381388193797 is an equidigital number, since it uses as much as digits as its factorization.

6381388193797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329204736, while the sum is 73.

The spelling of 6381388193797 in words is "six trillion, three hundred eighty-one billion, three hundred eighty-eight million, one hundred ninety-three thousand, seven hundred ninety-seven".