16106500665 has 24 divisors (see below), whose sum is σ = 27930589128. Its totient is φ = 8586240000.

The previous prime is 16106500643. The next prime is 16106500681. The reversal of 16106500665 is 56600560161.

It can be written as a sum of positive squares in 4 ways, for example, as 9408224016 + 6698276649 = 96996^2 + 81843^2 .

It is not a de Polignac number, because 16106500665 - 2¹⁷ = 16106369593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20665 + ... + 180665.

It is an arithmetic number, because the mean of its divisors is an integer number (1163774547).

Almost surely, 2^16106500665 is an apocalyptic number.

16106500665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16106500665 is a deficient number, since it is larger than the sum of its proper divisors (11824088463).

16106500665 is a wasteful number, since it uses less digits than its factorization.

16106500665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162249 (or 162246 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 16106500665 in words is "sixteen billion, one hundred six million, five hundred thousand, six hundred sixty-five".