168497971200 has 816 divisors, whose sum is σ = 668965412640. Its totient is φ = 41334865920.

The previous prime is 168497971157. The next prime is 168497971211. The reversal of 168497971200 is 2179794861.

168497971200 is a `hidden beast` number, since 1 + 68 + 497 + 9 + 71 + 20 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 575078254 + ... + 575078546.

Almost surely, 2^168497971200 is an apocalyptic number.

168497971200 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 168497971200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334482706320).

168497971200 is an abundant number, since it is smaller than the sum of its proper divisors (500467441440).

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

168497971200 is an equidigital number, since it uses as much as digits as its factorization.

168497971200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 168497971200 in words is "one hundred sixty-eight billion, four hundred ninety-seven million, nine hundred seventy-one thousand, two hundred".