163536131616 has 384 divisors, whose sum is σ = 557233883136. Its totient is φ = 41180282880.

The previous prime is 163536131609. The next prime is 163536131641. The reversal of 163536131616 is 616131635361.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5352415 + ... + 5382881.

It is an arithmetic number, because the mean of its divisors is an integer number (1451129904).

Almost surely, 2^163536131616 is an apocalyptic number.

163536131616 is a gapful number since it is divisible by the number (16) 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 163536131616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278616941568).

163536131616 is an abundant number, since it is smaller than the sum of its proper divisors (393697751520).

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

163536131616 is a wasteful number, since it uses less digits than its factorization.

163536131616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30544 (or 30536 counting only the distinct ones).

The product of its digits is 174960, while the sum is 42.

Adding to 163536131616 its reverse (616131635361), we get a palindrome (779667766977).

The spelling of 163536131616 in words is "one hundred sixty-three billion, five hundred thirty-six million, one hundred thirty-one thousand, six hundred sixteen".