163128418788 has 48 divisors (see below), whose sum is σ = 405493643520. Its totient is φ = 50893578144.

The previous prime is 163128418711. The next prime is 163128418813. The reversal of 163128418788 is 887814821361.

It is a super-2 number, since 2×163128418788² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 4291170 + ... + 4329017.

It is an arithmetic number, because the mean of its divisors is an integer number (8447784240).

Almost surely, 2^163128418788 is an apocalyptic number.

It is an amenable number.

163128418788 is an abundant number, since it is smaller than the sum of its proper divisors (242365224732).

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

163128418788 is a wasteful number, since it uses less digits than its factorization.

163128418788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620296 (or 8620294 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 57.

The spelling of 163128418788 in words is "one hundred sixty-three billion, one hundred twenty-eight million, four hundred eighteen thousand, seven hundred eighty-eight".