163452213520 has 80 divisors (see below), whose sum is σ = 400150728000. Its totient is φ = 61920751104.

The previous prime is 163452213487. The next prime is 163452213523. The reversal of 163452213520 is 25312254361.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×163452213520² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163452213523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5546986 + ... + 5576374.

It is an arithmetic number, because the mean of its divisors is an integer number (5001884100).

Almost surely, 2^163452213520 is an apocalyptic number.

163452213520 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 163452213520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200075364000).

163452213520 is an abundant number, since it is smaller than the sum of its proper divisors (236698514480).

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

163452213520 is a wasteful number, since it uses less digits than its factorization.

163452213520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33080 (or 33074 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 163452213520 its reverse (25312254361), we get a palindrome (188764467881).

The spelling of 163452213520 in words is "one hundred sixty-three billion, four hundred fifty-two million, two hundred thirteen thousand, five hundred twenty".