168423954498 has 18 divisors (see below), whose sum is σ = 364922340627. Its totient is φ = 56140737780.

The previous prime is 168423954481. The next prime is 168423954509. The reversal of 168423954498 is 894459324861.

168423954498 is a `hidden beast` number, since 1 + 6 + 84 + 2 + 3 + 9 + 544 + 9 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84211977249 + 84211977249 = 290193^2 + 290193^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=290193.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1692793 + ... + 1789523.

Almost surely, 2^168423954498 is an apocalyptic number.

168423954498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168423954498 is an abundant number, since it is smaller than the sum of its proper divisors (196498386129).

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

168423954498 is an frugal number, since it uses more digits than its factorization.

168423954498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193470 (or 96736 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 168423954498 in words is "one hundred sixty-eight billion, four hundred twenty-three million, nine hundred fifty-four thousand, four hundred ninety-eight".