102161028128 has 24 divisors (see below), whose sum is σ = 203120911980. Its totient is φ = 50574764800.

The previous prime is 102161028119. The next prime is 102161028149. The reversal of 102161028128 is 821820161201.

It can be written as a sum of positive squares in 2 ways, for example, as 100877382544 + 1283645584 = 317612^2 + 35828^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 102161028094 and 102161028103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15801383 + ... + 15807846.

Almost surely, 2^102161028128 is an apocalyptic number.

It is an amenable number.

102161028128 is a deficient number, since it is larger than the sum of its proper divisors (100959883852).

102161028128 is a wasteful number, since it uses less digits than its factorization.

102161028128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31609340 (or 31609332 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

Adding to 102161028128 its reverse (821820161201), we get a palindrome (923981189329).

The spelling of 102161028128 in words is "one hundred two billion, one hundred sixty-one million, twenty-eight thousand, one hundred twenty-eight".