168921238431088 has 80 divisors (see below), whose sum is σ = 384523681096800. Its totient is φ = 70872146979840.

The previous prime is 168921238431073. The next prime is 168921238431097. The reversal of 168921238431088 is 880134832129861.

It is a congruent number.

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, 39778858 + ... + 43820086.

It is an arithmetic number, because the mean of its divisors is an integer number (4806546013710).

Almost surely, 2^{168921238431088} is an apocalyptic number.

It is an amenable number.

168921238431088 is an abundant number, since it is smaller than the sum of its proper divisors (215602442665712).

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

168921238431088 is a wasteful number, since it uses less digits than its factorization.

168921238431088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059530 (or 4059524 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 64.

The spelling of 168921238431088 in words is "one hundred sixty-eight trillion, nine hundred twenty-one billion, two hundred thirty-eight million, four hundred thirty-one thousand, eighty-eight".