168855131392 has 18 divisors (see below), whose sum is σ = 337050672938. Its totient is φ = 84427565568.

The previous prime is 168855131297. The next prime is 168855131407. The reversal of 168855131392 is 293131558861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 168283730176 + 571401216 = 410224^2 + 23904^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329794923 + ... + 329795434.

Almost surely, 2^168855131392 is an apocalyptic number.

It is an amenable number.

168855131392 is a deficient number, since it is larger than the sum of its proper divisors (168195541546).

168855131392 is an frugal number, since it uses more digits than its factorization.

168855131392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659590373 (or 659590359 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 52.

The spelling of 168855131392 in words is "one hundred sixty-eight billion, eight hundred fifty-five million, one hundred thirty-one thousand, three hundred ninety-two".