6523140043 has 10 divisors (see below), whose sum is σ = 7609880044. Its totient is φ = 5591260836.

The previous prime is 6523140007. The next prime is 6523140049. The reversal of 6523140043 is 3400413256.

It is a de Polignac number, because none of the positive numbers 2^k-6523140043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6523139993 and 6523140020.

It is not an unprimeable number, because it can be changed into a prime (6523140049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1356021 + ... + 1360822.

Almost surely, 2^6523140043 is an apocalyptic number.

6523140043 is a deficient number, since it is larger than the sum of its proper divisors (1086740001).

6523140043 is an frugal number, since it uses more digits than its factorization.

6523140043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716871 (or 2716850 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 6523140043 is about 80765.9584416603. The cubic root of 6523140043 is about 1868.4675829663.

Adding to 6523140043 its reverse (3400413256), we get a palindrome (9923553299).

The spelling of 6523140043 in words is "six billion, five hundred twenty-three million, one hundred forty thousand, forty-three".