168224791022500 has 135 divisors (see below), whose sum is σ = 390812150711829. Its totient is φ = 63327535584000.

The previous prime is 168224791022479. The next prime is 168224791022521. The reversal of 168224791022500 is 5220197422861.

The square root of 168224791022500 is 12970150.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (168224791022479) and next prime (168224791022521).

It can be written as a sum of positive squares in 7 ways, for example, as 82153304311716 + 86071486710784 = 9063846^2 + 9277472^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 11024619871 + ... + 11024635129.

Almost surely, 2^{168224791022500} is an apocalyptic number.

168224791022500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168224791022500 is the 12970150-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168224791022500

168224791022500 is an abundant number, since it is smaller than the sum of its proper divisors (222587359689329).

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

168224791022500 is an frugal number, since it uses more digits than its factorization.

168224791022500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30576 (or 15283 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 168224791022500 in words is "one hundred sixty-eight trillion, two hundred twenty-four billion, seven hundred ninety-one million, twenty-two thousand, five hundred".