168538878360 has 256 divisors, whose sum is σ = 587119104000. Its totient is φ = 42923865600.

The previous prime is 168538878359. The next prime is 168538878371. The reversal of 168538878360 is 63878835861.

168538878360 is a `hidden beast` number, since 1 + 68 + 538 + 8 + 7 + 8 + 36 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17408001 + ... + 17417679.

It is an arithmetic number, because the mean of its divisors is an integer number (2293434000).

Almost surely, 2^168538878360 is an apocalyptic number.

168538878360 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 168538878360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293559552000).

168538878360 is an abundant number, since it is smaller than the sum of its proper divisors (418580225640).

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

168538878360 is a wasteful number, since it uses less digits than its factorization.

168538878360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423 (or 10413 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 168538878360 in words is "one hundred sixty-eight billion, five hundred thirty-eight million, eight hundred seventy-eight thousand, three hundred sixty".