168399503360 has 512 divisors, whose sum is σ = 470870547840. Its totient is φ = 57252249600.

The previous prime is 168399503359. The next prime is 168399503411. The reversal of 168399503360 is 63305993861.

It is a tau number, because it is divible by the number of its divisors (512).

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3177349094 + ... + 3177349146.

Almost surely, 2^168399503360 is an apocalyptic number.

168399503360 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 168399503360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235435273920).

168399503360 is an abundant number, since it is smaller than the sum of its proper divisors (302471044480).

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

168399503360 is an equidigital number, since it uses as much as digits as its factorization.

168399503360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 53.

The spelling of 168399503360 in words is "one hundred sixty-eight billion, three hundred ninety-nine million, five hundred three thousand, three hundred sixty".