16143016243 has 4 divisors (see below), whose sum is σ = 16214131080. Its totient is φ = 16071901408.

The previous prime is 16143016231. The next prime is 16143016273. The reversal of 16143016243 is 34261034161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34261034161 = 7243 ⋅4730227.

It is a cyclic number.

It is not a de Polignac number, because 16143016243 - 2¹³ = 16143008051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16143016273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35557078 + ... + 35557531.

It is an arithmetic number, because the mean of its divisors is an integer number (4053532770).

Almost surely, 2^16143016243 is an apocalyptic number.

16143016243 is a deficient number, since it is larger than the sum of its proper divisors (71114837).

16143016243 is an equidigital number, since it uses as much as digits as its factorization.

16143016243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71114836.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 16143016243 in words is "sixteen billion, one hundred forty-three million, sixteen thousand, two hundred forty-three".