168491358363 has 18 divisors (see below), whose sum is σ = 225749640532. Its totient is φ = 111782971520.

The previous prime is 168491358257. The next prime is 168491358391. The reversal of 168491358363 is 363853194861.

It is not a de Polignac number, because 168491358363 - 2⁸ = 168491358107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168491359363) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 191249683 + ... + 191250563.

Almost surely, 2^168491358363 is an apocalyptic number.

168491358363 is a deficient number, since it is larger than the sum of its proper divisors (57258282169).

168491358363 is an frugal number, since it uses more digits than its factorization.

168491358363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303 (or 1153 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 57.

The spelling of 168491358363 in words is "one hundred sixty-eight billion, four hundred ninety-one million, three hundred fifty-eight thousand, three hundred sixty-three".