16531553343 has 32 divisors (see below), whose sum is σ = 22893291520. Its totient is φ = 10602576000.

The previous prime is 16531553329. The next prime is 16531553359. The reversal of 16531553343 is 34335513561.

It is not a de Polignac number, because 16531553343 - 2¹⁸ = 16531291199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16530553343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7342968 + ... + 7345218.

It is an arithmetic number, because the mean of its divisors is an integer number (715415360).

Almost surely, 2^16531553343 is an apocalyptic number.

16531553343 is a deficient number, since it is larger than the sum of its proper divisors (6361738177).

16531553343 is a wasteful number, since it uses less digits than its factorization.

16531553343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007.

The product of its digits is 243000, while the sum is 39.

The spelling of 16531553343 in words is "sixteen billion, five hundred thirty-one million, five hundred fifty-three thousand, three hundred forty-three".