163305315552 has 96 divisors (see below), whose sum is σ = 451408446720. Its totient is φ = 51550663680.

The previous prime is 163305315469. The next prime is 163305315577. The reversal of 163305315552 is 255513503361.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 163305315552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5279652 + ... + 5310492.

It is an arithmetic number, because the mean of its divisors is an integer number (4702171320).

Almost surely, 2^163305315552 is an apocalyptic number.

163305315552 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 163305315552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225704223360).

163305315552 is an abundant number, since it is smaller than the sum of its proper divisors (288103131168).

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

163305315552 is a wasteful number, since it uses less digits than its factorization.

163305315552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33776 (or 33768 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 39.

The spelling of 163305315552 in words is "one hundred sixty-three billion, three hundred five million, three hundred fifteen thousand, five hundred fifty-two".