163542406236 has 96 divisors (see below), whose sum is σ = 422334528000. Its totient is φ = 48842956800.

The previous prime is 163542406229. The next prime is 163542406249. The reversal of 163542406236 is 632604245361.

It is a happy number.

It is a super-2 number, since 2×163542406236² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3059265 + ... + 3112263.

It is an arithmetic number, because the mean of its divisors is an integer number (4399318000).

Almost surely, 2^163542406236 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 163542406236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211167264000).

163542406236 is an abundant number, since it is smaller than the sum of its proper divisors (258792121764).

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

163542406236 is a wasteful number, since it uses less digits than its factorization.

163542406236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53355 (or 53353 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

It can be divided in two parts, 163542 and 406236, that added together give a triangular number (569778 = T₁₀₆₇).

The spelling of 163542406236 in words is "one hundred sixty-three billion, five hundred forty-two million, four hundred six thousand, two hundred thirty-six".