168520403232 has 384 divisors, whose sum is σ = 531071251200. Its totient is φ = 51799523328.

The previous prime is 168520403231. The next prime is 168520403257. The reversal of 168520403232 is 232304025861.

168520403232 is a `hidden beast` number, since 1 + 68 + 520 + 40 + 3 + 2 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (168520403231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 167016744 + ... + 167017752.

It is an arithmetic number, because the mean of its divisors is an integer number (1382998050).

Almost surely, 2^168520403232 is an apocalyptic number.

168520403232 is a gapful number since it is divisible by the number (12) 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 168520403232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265535625600).

168520403232 is an abundant number, since it is smaller than the sum of its proper divisors (362550847968).

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

168520403232 is a wasteful number, since it uses less digits than its factorization.

168520403232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 168520403232 in words is "one hundred sixty-eight billion, five hundred twenty million, four hundred three thousand, two hundred thirty-two".