168408887418 has 24 divisors (see below), whose sum is σ = 365732542656. Its totient is φ = 56006046600.

The previous prime is 168408887389. The next prime is 168408887429. The reversal of 168408887418 is 814788804861.

168408887418 is a `hidden beast` number, since 1 + 68 + 4 + 0 + 88 + 87 + 418 = 666.

It is a super-2 number, since 2×168408887418² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10846128 + ... + 10861643.

It is an arithmetic number, because the mean of its divisors is an integer number (15238855944).

Almost surely, 2^168408887418 is an apocalyptic number.

168408887418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168408887418 is an abundant number, since it is smaller than the sum of its proper divisors (197323655238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168408887418 is a wasteful number, since it uses less digits than its factorization.

168408887418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21708210 (or 21708207 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 63.

The spelling of 168408887418 in words is "one hundred sixty-eight billion, four hundred eight million, eight hundred eighty-seven thousand, four hundred eighteen".