16531033417 has 16 divisors (see below), whose sum is σ = 17111178000. Its totient is φ = 15960130560.

The previous prime is 16531033319. The next prime is 16531033487. The reversal of 16531033417 is 71433013561.

It can be written as a sum of positive squares in 8 ways, for example, as 7824463936 + 8706569481 = 88456^2 + 93309^2 .

It is a cyclic number.

It is not a de Polignac number, because 16531033417 - 2⁷ = 16531033289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16531033487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1687309 + ... + 1697077.

It is an arithmetic number, because the mean of its divisors is an integer number (1069448625).

Almost surely, 2^16531033417 is an apocalyptic number.

It is an amenable number.

16531033417 is a deficient number, since it is larger than the sum of its proper divisors (580144583).

16531033417 is a wasteful number, since it uses less digits than its factorization.

16531033417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236.

The product of its (nonzero) digits is 22680, while the sum is 34.

Adding to 16531033417 its reverse (71433013561), we get a palindrome (87964046978).

The spelling of 16531033417 in words is "sixteen billion, five hundred thirty-one million, thirty-three thousand, four hundred seventeen".