163242251312 has 80 divisors (see below), whose sum is σ = 364358679552. Its totient is φ = 69402182400.

The previous prime is 163242251299. The next prime is 163242251323. The reversal of 163242251312 is 213152242361.

It is a super-2 number, since 2×163242251312² (a number of 23 digits) contains 22 as substring.

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, 13066733 + ... + 13079219.

Almost surely, 2^163242251312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163242251312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182179339776).

163242251312 is an abundant number, since it is smaller than the sum of its proper divisors (201116428240).

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

163242251312 is a wasteful number, since it uses less digits than its factorization.

163242251312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13426 (or 13420 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

Adding to 163242251312 its reverse (213152242361), we get a palindrome (376394493673).

The spelling of 163242251312 in words is "one hundred sixty-three billion, two hundred forty-two million, two hundred fifty-one thousand, three hundred twelve".