16041003561 has 20 divisors (see below), whose sum is σ = 26140896144. Its totient is φ = 9721819800.

The previous prime is 16041003541. The next prime is 16041003581. The reversal of 16041003561 is 16530014061.

16041003561 is a `hidden beast` number, since 1 + 60 + 41 + 0 + 0 + 3 + 561 = 666.

16041003561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16041003541) and next prime (16041003581).

It is not a de Polignac number, because 16041003561 - 2⁹ = 16041003049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16041003541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9000795 + ... + 9002576.

Almost surely, 2^16041003561 is an apocalyptic number.

16041003561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16041003561 is a deficient number, since it is larger than the sum of its proper divisors (10099892583).

16041003561 is a wasteful number, since it uses less digits than its factorization.

16041003561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18003394 (or 18003385 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 16041003561 in words is "sixteen billion, forty-one million, three thousand, five hundred sixty-one".