16523044633 has 4 divisors (see below), whose sum is σ = 16633937700. Its totient is φ = 16412151568.

The previous prime is 16523044619. The next prime is 16523044639. The reversal of 16523044633 is 33644032561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33644032561 = 2539 ⋅13250899.

It can be written as a sum of positive squares in 2 ways, for example, as 1805230144 + 14717814489 = 42488^2 + 121317^2 .

It is a cyclic number.

It is not a de Polignac number, because 16523044633 - 2¹³ = 16523036441 is a prime.

It is a super-2 number, since 2×16523044633² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16523044592 and 16523044601.

It is not an unprimeable number, because it can be changed into a prime (16523044639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55446310 + ... + 55446607.

It is an arithmetic number, because the mean of its divisors is an integer number (4158484425).

Almost surely, 2^16523044633 is an apocalyptic number.

It is an amenable number.

16523044633 is a deficient number, since it is larger than the sum of its proper divisors (110893067).

16523044633 is a wasteful number, since it uses less digits than its factorization.

16523044633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110893066.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 16523044633 in words is "sixteen billion, five hundred twenty-three million, forty-four thousand, six hundred thirty-three".