163465504020 has 288 divisors, whose sum is σ = 642391975680. Its totient is φ = 32674129920.

The previous prime is 163465504019. The next prime is 163465504061. The reversal of 163465504020 is 20405564361.

163465504020 is a `hidden beast` number, since 1 + 6 + 3 + 46 + 550 + 40 + 20 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48600 + ... + 573840.

Almost surely, 2^163465504020 is an apocalyptic number.

163465504020 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 163465504020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321195987840).

163465504020 is an abundant number, since it is smaller than the sum of its proper divisors (478926471660).

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

163465504020 is a wasteful number, since it uses less digits than its factorization.

163465504020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525295 (or 525290 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 163465504020 in words is "one hundred sixty-three billion, four hundred sixty-five million, five hundred four thousand, twenty".