2115433543 has 4 divisors (see below), whose sum is σ = 2128907800. Its totient is φ = 2101959288.

The previous prime is 2115433519. The next prime is 2115433553. The reversal of 2115433543 is 3453345112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2115433543 - 2⁵ = 2115433511 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 (2115433513) 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, 6736893 + ... + 6737206.

It is an arithmetic number, because the mean of its divisors is an integer number (532226950).

Almost surely, 2^2115433543 is an apocalyptic number.

2115433543 is a deficient number, since it is larger than the sum of its proper divisors (13474257).

2115433543 is a wasteful number, since it uses less digits than its factorization.

2115433543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13474256.

The product of its digits is 21600, while the sum is 31.

The square root of 2115433543 is about 45993.8424465710. The cubic root of 2115433543 is about 1283.7086337825.

Adding to 2115433543 its reverse (3453345112), we get a palindrome (5568778655).

The spelling of 2115433543 in words is "two billion, one hundred fifteen million, four hundred thirty-three thousand, five hundred forty-three".