16445530899 has 32 divisors (see below), whose sum is σ = 27913850880. Its totient is φ = 9373968000.

The previous prime is 16445530889. The next prime is 16445530903. The reversal of 16445530899 is 99803554461.

16445530899 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 553 + 0 + 89 + 9 = 666.

It is not a de Polignac number, because 16445530899 - 2¹¹ = 16445528851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16445530889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32707 + ... + 184284.

It is an arithmetic number, because the mean of its divisors is an integer number (872307840).

Almost surely, 2^16445530899 is an apocalyptic number.

16445530899 is a deficient number, since it is larger than the sum of its proper divisors (11468319981).

16445530899 is a wasteful number, since it uses less digits than its factorization.

16445530899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217408 (or 217402 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 16445530899 in words is "sixteen billion, four hundred forty-five million, five hundred thirty thousand, eight hundred ninety-nine".