16365040533 has 24 divisors (see below), whose sum is σ = 24036999480. Its totient is φ = 10726220160.

The previous prime is 16365040513. The next prime is 16365040589. The reversal of 16365040533 is 33504056361.

16365040533 is a `hidden beast` number, since 1 + 6 + 36 + 50 + 40 + 533 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 595457604 + 15769582929 = 24402^2 + 125577^2 .

It is not a de Polignac number, because 16365040533 - 2²⁴ = 16348263317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16365040513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1472923 + ... + 1483991.

It is an arithmetic number, because the mean of its divisors is an integer number (1001541645).

Almost surely, 2^16365040533 is an apocalyptic number.

It is an amenable number.

16365040533 is a deficient number, since it is larger than the sum of its proper divisors (7671958947).

16365040533 is a wasteful number, since it uses less digits than its factorization.

16365040533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13829 (or 13826 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 16365040533 its reverse (33504056361), we get a palindrome (49869096894).

The spelling of 16365040533 in words is "sixteen billion, three hundred sixty-five million, forty thousand, five hundred thirty-three".