168405259679 has 2 divisors, whose sum is σ = 168405259680. Its totient is φ = 168405259678.

The previous prime is 168405259667. The next prime is 168405259697. The reversal of 168405259679 is 976952504861.

Together with next prime (168405259697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168405259679 - 2¹² = 168405255583 is a prime.

It is a super-3 number, since 3×168405259679³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168405259639) 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, 84202629839 + 84202629840.

It is an arithmetic number, because the mean of its divisors is an integer number (84202629840).

Almost surely, 2^168405259679 is an apocalyptic number.

168405259679 is a deficient number, since it is larger than the sum of its proper divisors (1).

168405259679 is an equidigital number, since it uses as much as digits as its factorization.

168405259679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 168405259679 in words is "one hundred sixty-eight billion, four hundred five million, two hundred fifty-nine thousand, six hundred seventy-nine".