168138563148 has 36 divisors (see below), whose sum is σ = 425267529960. Its totient is φ = 56013140736.

The previous prime is 168138563147. The next prime is 168138563179. The reversal of 168138563148 is 841365831861.

It is a happy number.

168138563148 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 38 + 563 + 1 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 168138563094 and 168138563103.

It is not an unprimeable number, because it can be changed into a prime (168138563141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1315018 + ... + 1437201.

Almost surely, 2^168138563148 is an apocalyptic number.

168138563148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168138563148 is an abundant number, since it is smaller than the sum of its proper divisors (257128966812).

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

168138563148 is a wasteful number, since it uses less digits than its factorization.

168138563148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753926 (or 2753921 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 168138563148 in words is "one hundred sixty-eight billion, one hundred thirty-eight million, five hundred sixty-three thousand, one hundred forty-eight".