68398440763 has 2 divisors, whose sum is σ = 68398440764. Its totient is φ = 68398440762.

The previous prime is 68398440751. The next prime is 68398440769. The reversal of 68398440763 is 36704489386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68398440763 - 2³³ = 59808506171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68398440698 and 68398440707.

It is not a weakly prime, because it can be changed into another prime (68398440769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34199220381 + 34199220382.

It is an arithmetic number, because the mean of its divisors is an integer number (34199220382).

Almost surely, 2^68398440763 is an apocalyptic number.

68398440763 is a deficient number, since it is larger than the sum of its proper divisors (1).

68398440763 is an equidigital number, since it uses as much as digits as its factorization.

68398440763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 58.

The spelling of 68398440763 in words is "sixty-eight billion, three hundred ninety-eight million, four hundred forty thousand, seven hundred sixty-three".