168305679403 has 2 divisors, whose sum is σ = 168305679404. Its totient is φ = 168305679402.

The previous prime is 168305679401. The next prime is 168305679419. The reversal of 168305679403 is 304976503861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168305679403 - 2¹ = 168305679401 is a prime.

Together with 168305679401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (168305679401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84152839701 + 84152839702.

It is an arithmetic number, because the mean of its divisors is an integer number (84152839702).

Almost surely, 2^168305679403 is an apocalyptic number.

168305679403 is a deficient number, since it is larger than the sum of its proper divisors (1).

168305679403 is an equidigital number, since it uses as much as digits as its factorization.

168305679403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 168305679403 in words is "one hundred sixty-eight billion, three hundred five million, six hundred seventy-nine thousand, four hundred three".