163340375688 has 224 divisors, whose sum is σ = 525941107200. Its totient is φ = 46565673984.

The previous prime is 163340375657. The next prime is 163340375729. The reversal of 163340375688 is 886573043361.

163340375688 is a `hidden beast` number, since 1 + 6 + 3 + 3 + 40 + 37 + 568 + 8 = 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 55 ways as a sum of consecutive naturals, for example, 19550520 + ... + 19558872.

Almost surely, 2^163340375688 is an apocalyptic number.

163340375688 is a gapful number since it is divisible by the number (18) 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 163340375688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262970553600).

163340375688 is an abundant number, since it is smaller than the sum of its proper divisors (362600731512).

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

163340375688 is an equidigital number, since it uses as much as digits as its factorization.

163340375688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863 (or 8844 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 163340375688 in words is "one hundred sixty-three billion, three hundred forty million, three hundred seventy-five thousand, six hundred eighty-eight".