16239105108 has 18 divisors (see below), whose sum is σ = 41048849114. Its totient is φ = 5413035024.

The previous prime is 16239105073. The next prime is 16239105149. The reversal of 16239105108 is 80150193261.

16239105108 is a `hidden beast` number, since 1 + 623 + 9 + 10 + 5 + 10 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14196245904 + 2042859204 = 119148^2 + 45198^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 451086253 = 16239105108 / (1 + 6 + 2 + 3 + 9 + 1 + 0 + 5 + 1 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225543091 + ... + 225543162.

Almost surely, 2^16239105108 is an apocalyptic number.

16239105108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16239105108 is an abundant number, since it is smaller than the sum of its proper divisors (24809744006).

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

16239105108 is a wasteful number, since it uses less digits than its factorization.

16239105108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451086263 (or 451086258 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

Adding to 16239105108 its reverse (80150193261), we get a palindrome (96389298369).

The spelling of 16239105108 in words is "sixteen billion, two hundred thirty-nine million, one hundred five thousand, one hundred eight".