57585016081 has 4 divisors (see below), whose sum is σ = 57585496500. Its totient is φ = 57584535664.

The previous prime is 57585016043. The next prime is 57585016133. The reversal of 57585016081 is 18061058575.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35462915856 + 22122100225 = 188316^2 + 148735^2 .

It is a cyclic number.

It is not a de Polignac number, because 57585016081 - 2¹⁹ = 57584491793 is a prime.

It is a super-2 number, since 2×57585016081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57585016981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103995 + ... + 354943.

It is an arithmetic number, because the mean of its divisors is an integer number (14396374125).

Almost surely, 2^57585016081 is an apocalyptic number.

It is an amenable number.

57585016081 is a deficient number, since it is larger than the sum of its proper divisors (480419).

57585016081 is a wasteful number, since it uses less digits than its factorization.

57585016081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480418.

The product of its (nonzero) digits is 336000, while the sum is 46.

The spelling of 57585016081 in words is "fifty-seven billion, five hundred eighty-five million, sixteen thousand, eighty-one".