163122603138 has 40 divisors (see below), whose sum is σ = 398744145360. Its totient is φ = 49431091320.

The previous prime is 163122603109. The next prime is 163122603209. The reversal of 163122603138 is 831306221361.

163122603138 is a `hidden beast` number, since 1 + 6 + 3 + 12 + 2 + 603 + 1 + 38 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45767748 + ... + 45771311.

It is an arithmetic number, because the mean of its divisors is an integer number (9968603634).

Almost surely, 2^163122603138 is an apocalyptic number.

163122603138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

163122603138 is an abundant number, since it is smaller than the sum of its proper divisors (235621542222).

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

163122603138 is a wasteful number, since it uses less digits than its factorization.

163122603138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91539084 (or 91539075 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 163122603138 its reverse (831306221361), we get a palindrome (994428824499).

The spelling of 163122603138 in words is "one hundred sixty-three billion, one hundred twenty-two million, six hundred three thousand, one hundred thirty-eight".