168231034278 has 48 divisors (see below), whose sum is σ = 393043014000. Its totient is φ = 51829839360.

The previous prime is 168231034207. The next prime is 168231034337. The reversal of 168231034278 is 872430132861.

168231034278 is a `hidden beast` number, since 1 + 6 + 8 + 231 + 0 + 342 + 78 = 666.

It is a super-2 number, since 2×168231034278² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5984803 + ... + 6012846.

It is an arithmetic number, because the mean of its divisors is an integer number (8188396125).

Almost surely, 2^168231034278 is an apocalyptic number.

168231034278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168231034278 is an abundant number, since it is smaller than the sum of its proper divisors (224811979722).

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

168231034278 is a wasteful number, since it uses less digits than its factorization.

168231034278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11997717 (or 11997714 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 168231034278 in words is "one hundred sixty-eight billion, two hundred thirty-one million, thirty-four thousand, two hundred seventy-eight".