57871993933 has 6 divisors (see below), whose sum is σ = 62324619882. Its totient is φ = 53419501440.

The previous prime is 57871993931. The next prime is 57871993969. The reversal of 57871993933 is 33939917875.

57871993933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1217521449 + 56654472484 = 34893^2 + 238022^2 .

It is not a de Polignac number, because 57871993933 - 2¹ = 57871993931 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 (57871993931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 834013 + ... + 900733.

It is an arithmetic number, because the mean of its divisors is an integer number (10387436647).

Almost surely, 2^57871993933 is an apocalyptic number.

It is an amenable number.

57871993933 is a deficient number, since it is larger than the sum of its proper divisors (4452625949).

57871993933 is an frugal number, since it uses more digits than its factorization.

57871993933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133455 (or 66734 counting only the distinct ones).

The product of its digits is 38578680, while the sum is 64.

The spelling of 57871993933 in words is "fifty-seven billion, eight hundred seventy-one million, nine hundred ninety-three thousand, nine hundred thirty-three".