168460451999 has 16 divisors (see below), whose sum is σ = 198763837440. Its totient is φ = 139717738080.

The previous prime is 168460451989. The next prime is 168460452011. The reversal of 168460451999 is 999154064861.

It is a cyclic number.

It is not a de Polignac number, because 168460451999 - 2¹⁶ = 168460386463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168460451989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1672532 + ... + 1770390.

It is an arithmetic number, because the mean of its divisors is an integer number (12422739840).

Almost surely, 2^168460451999 is an apocalyptic number.

168460451999 is a deficient number, since it is larger than the sum of its proper divisors (30303385441).

168460451999 is an equidigital number, since it uses as much as digits as its factorization.

168460451999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105830.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 168460451999 in words is "one hundred sixty-eight billion, four hundred sixty million, four hundred fifty-one thousand, nine hundred ninety-nine".