168220981051200 has 6720 divisors, whose sum is σ = 849960227635200. Its totient is φ = 31584842956800.

The previous prime is 168220981051199. The next prime is 168220981051237. The reversal of 168220981051200 is 2150189022861.

168220981051200 is a `hidden beast` number, since 16 + 8 + 2 + 20 + 98 + 10 + 512 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (6720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 959 ways as a sum of consecutive naturals, for example, 383191300581 + ... + 383191301019.

Almost surely, 2^{168220981051200} is an apocalyptic number.

168220981051200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168220981051200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424980113817600).

168220981051200 is an abundant number, since it is smaller than the sum of its proper divisors (681739246584000).

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

168220981051200 is a wasteful number, since it uses less digits than its factorization.

168220981051200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 168220981051200 in words is "one hundred sixty-eight trillion, two hundred twenty billion, nine hundred eighty-one million, fifty-one thousand, two hundred".