16528406046388 has 12 divisors (see below), whose sum is σ = 28965507074980. Its totient is φ = 8252546882112.

The previous prime is 16528406046311. The next prime is 16528406046517. The reversal of 16528406046388 is 88364060482561.

It can be written as a sum of positive squares in 2 ways, for example, as 6527708183844 + 10000697862544 = 2554938^2 + 3162388^2 .

It is a congruent number.

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, 2914032081 + ... + 2914037752.

Almost surely, 2^{16528406046388} is an apocalyptic number.

It is an amenable number.

16528406046388 is a deficient number, since it is larger than the sum of its proper divisors (12437101028592).

16528406046388 is a wasteful number, since it uses less digits than its factorization.

16528406046388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828070546 (or 5828070544 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 61.

The spelling of 16528406046388 in words is "sixteen trillion, five hundred twenty-eight billion, four hundred six million, forty-six thousand, three hundred eighty-eight".