168021883452 has 24 divisors (see below), whose sum is σ = 392265231232. Its totient is φ = 55976698800.

The previous prime is 168021883439. The next prime is 168021883453. The reversal of 168021883452 is 254388120861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168021883453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3801574 + ... + 3845517.

Almost surely, 2^168021883452 is an apocalyptic number.

168021883452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168021883452 is an abundant number, since it is smaller than the sum of its proper divisors (224243347780).

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

168021883452 is a wasteful number, since it uses less digits than its factorization.

168021883452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648929 (or 7648927 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 168021883452 in words is "one hundred sixty-eight billion, twenty-one million, eight hundred eighty-three thousand, four hundred fifty-two".