7543993457 has 64 divisors (see below), whose sum is σ = 10785083904. Its totient is φ = 5078384640.

The previous prime is 7543993411. The next prime is 7543993477.

7543993457 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7543993457 - 2⁶ = 7543993393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7543993477) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3283133 + ... + 3285429.

It is an arithmetic number, because the mean of its divisors is an integer number (168516936).

Almost surely, 2^7543993457 is an apocalyptic number.

7543993457 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

7543993457 is a deficient number, since it is larger than the sum of its proper divisors (3241090447).

7543993457 is a wasteful number, since it uses less digits than its factorization.

7543993457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its digits is 14288400, while the sum is 56.

The square root of 7543993457 is about 86856.1653367221. The cubic root of 7543993457 is about 1961.2536628494.

The spelling of 7543993457 in words is "seven billion, five hundred forty-three million, nine hundred ninety-three thousand, four hundred fifty-seven".