1768403818417 has 2 divisors, whose sum is σ = 1768403818418. Its totient is φ = 1768403818416.

The previous prime is 1768403818411. The next prime is 1768403818421. The reversal of 1768403818417 is 7148183048671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1670274496881 + 98129321536 = 1292391^2 + 313256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1768403818417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1768403818411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884201909208 + 884201909209.

It is an arithmetic number, because the mean of its divisors is an integer number (884201909209).

Almost surely, 2^{1768403818417} is an apocalyptic number.

It is an amenable number.

1768403818417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1768403818417 is an equidigital number, since it uses as much as digits as its factorization.

1768403818417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7225344, while the sum is 58.

The spelling of 1768403818417 in words is "one trillion, seven hundred sixty-eight billion, four hundred three million, eight hundred eighteen thousand, four hundred seventeen".