163611320516 has 48 divisors (see below), whose sum is σ = 335560216320. Its totient is φ = 68354711040.

The previous prime is 163611320443. The next prime is 163611320539. The reversal of 163611320516 is 615023116361.

163611320516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285425 + ... + 639288.

It is an arithmetic number, because the mean of its divisors is an integer number (6990837840).

Almost surely, 2^163611320516 is an apocalyptic number.

It is an amenable number.

163611320516 is an abundant number, since it is smaller than the sum of its proper divisors (171948895804).

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

163611320516 is a wasteful number, since it uses less digits than its factorization.

163611320516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924884 (or 924882 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

Adding to 163611320516 its reverse (615023116361), we get a palindrome (778634436877).

The spelling of 163611320516 in words is "one hundred sixty-three billion, six hundred eleven million, three hundred twenty thousand, five hundred sixteen".