16536143 has 6 divisors (see below), whose sum is σ = 17906184. Its totient is φ = 15263976.

The previous prime is 16536139. The next prime is 16536167. The reversal of 16536143 is 34163561.

It is a happy number.

It is not a de Polignac number, because 16536143 - 2² = 16536139 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 (16536643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48755 + ... + 49092.

It is an arithmetic number, because the mean of its divisors is an integer number (2984364).

Almost surely, 2^16536143 is an apocalyptic number.

16536143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16536143 is a deficient number, since it is larger than the sum of its proper divisors (1370041).

16536143 is an equidigital number, since it uses as much as digits as its factorization.

16536143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97873 (or 97860 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 16536143 is about 4066.4656644315. The cubic root of 16536143 is about 254.7679190486.

The spelling of 16536143 in words is "sixteen million, five hundred thirty-six thousand, one hundred forty-three".