168158709234 has 32 divisors (see below), whose sum is σ = 374002577280. Its totient is φ = 56005419600.

The previous prime is 168158709179. The next prime is 168158709259. The reversal of 168158709234 is 432907851861.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254622 + ... + 1382169.

It is an arithmetic number, because the mean of its divisors is an integer number (11687580540).

It is a 1-persistent number, because it is pandigital, but 2⋅168158709234 = 336317418468 is not.

Almost surely, 2^168158709234 is an apocalyptic number.

168158709234 is an abundant number, since it is smaller than the sum of its proper divisors (205843868046).

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

168158709234 is a wasteful number, since it uses less digits than its factorization.

168158709234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637983 (or 2637977 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 168158709234 in words is "one hundred sixty-eight billion, one hundred fifty-eight million, seven hundred nine thousand, two hundred thirty-four".