168469985807643 has 36 divisors (see below), whose sum is σ = 256710383347320. Its totient is φ = 98217319554432.

The previous prime is 168469985807609. The next prime is 168469985807653. The reversal of 168469985807643 is 346708589964861.

It is a de Polignac number, because none of the positive numbers 2^k-168469985807643 is a prime.

It is a super-2 number, since 2×168469985807643² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168469985807653) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 460049578 + ... + 460415631.

It is an arithmetic number, because the mean of its divisors is an integer number (7130843981870).

Almost surely, 2^{168469985807643} is an apocalyptic number.

168469985807643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

168469985807643 is a deficient number, since it is larger than the sum of its proper divisors (88240397539677).

168469985807643 is a wasteful number, since it uses less digits than its factorization.

168469985807643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920465276 (or 920465244 counting only the distinct ones).

The product of its (nonzero) digits is 15049359360, while the sum is 84.

The spelling of 168469985807643 in words is "one hundred sixty-eight trillion, four hundred sixty-nine billion, nine hundred eighty-five million, eight hundred seven thousand, six hundred forty-three".