2016138728466 has 40 divisors (see below), whose sum is σ = 4519984425264. Its totient is φ = 671698108440.

The previous prime is 2016138728441. The next prime is 2016138728503. The reversal of 2016138728466 is 6648278316102.

It is a happy number.

2016138728466 is a `hidden beast` number, since 20 + 1 + 6 + 138 + 7 + 28 + 466 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2909680 + ... + 3535323.

Almost surely, 2^{2016138728466} is an apocalyptic number.

2016138728466 is an abundant number, since it is smaller than the sum of its proper divisors (2503845696798).

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

2016138728466 is a wasteful number, since it uses less digits than its factorization.

2016138728466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446948 (or 6446939 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 2016138728466 in words is "two trillion, sixteen billion, one hundred thirty-eight million, seven hundred twenty-eight thousand, four hundred sixty-six".