163253109408 has 24 divisors (see below), whose sum is σ = 428539412448. Its totient is φ = 54417703104.

The previous prime is 163253109407. The next prime is 163253109451. The reversal of 163253109408 is 804901352361.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×163253109408² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163253109408.

It is not an unprimeable number, because it can be changed into a prime (163253109407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850276516 + ... + 850276707.

It is an arithmetic number, because the mean of its divisors is an integer number (17855808852).

Almost surely, 2^163253109408 is an apocalyptic number.

It is an amenable number.

163253109408 is an abundant number, since it is smaller than the sum of its proper divisors (265286303040).

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

163253109408 is a wasteful number, since it uses less digits than its factorization.

163253109408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700553236 (or 1700553228 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 163253109408 in words is "one hundred sixty-three billion, two hundred fifty-three million, one hundred nine thousand, four hundred eight".