7543993456 has 20 divisors (see below), whose sum is σ = 14618205000. Its totient is φ = 3771553472.

The previous prime is 7543993411. The next prime is 7543993477. The reversal of 7543993456 is 6543993457.

It is a junction number, because it is equal to n+sod(n) for n = 7543993397 and 7543993406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145530 + ... + 190438.

It is an arithmetic number, because the mean of its divisors is an integer number (730910250).

Almost surely, 2^7543993456 is an apocalyptic number.

It is an amenable number.

7543993456 is a deficient number, since it is larger than the sum of its proper divisors (7074211544).

7543993456 is a wasteful number, since it uses less digits than its factorization.

7543993456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55416 (or 55410 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 55.

The square root of 7543993456 is about 86856.1653309654. The cubic root of 7543993456 is about 1961.2536627628.

Subtracting from 7543993456 its reverse (6543993457), we obtain a palindrome (999999999).

The spelling of 7543993456 in words is "seven billion, five hundred forty-three million, nine hundred ninety-three thousand, four hundred fifty-six".