57493947393 has 32 divisors (see below), whose sum is σ = 85649356800. Its totient is φ = 38116688400.

The previous prime is 57493947341. The next prime is 57493947421. The reversal of 57493947393 is 39374939475.

57493947393 is a `hidden beast` number, since 5 + 7 + 49 + 39 + 473 + 93 = 666.

It is not a de Polignac number, because 57493947393 - 2¹⁰ = 57493946369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57493947393.

It is not an unprimeable number, because it can be changed into a prime (57493957393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8604828 + ... + 8611506.

It is an arithmetic number, because the mean of its divisors is an integer number (2676542400).

Almost surely, 2^57493947393 is an apocalyptic number.

It is an amenable number.

57493947393 is a deficient number, since it is larger than the sum of its proper divisors (28155409407).

57493947393 is a wasteful number, since it uses less digits than its factorization.

57493947393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410 (or 8404 counting only the distinct ones).

The product of its digits is 77157360, while the sum is 63.

The spelling of 57493947393 in words is "fifty-seven billion, four hundred ninety-three million, nine hundred forty-seven thousand, three hundred ninety-three".