57857856717 has 8 divisors (see below), whose sum is σ = 79025365440. Its totient is φ = 37631126240.

The previous prime is 57857856697. The next prime is 57857856739. The reversal of 57857856717 is 71765875875.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57857856717 - 2¹² = 57857852621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57857856757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235194417 + ... + 235194662.

It is an arithmetic number, because the mean of its divisors is an integer number (9878170680).

Almost surely, 2^57857856717 is an apocalyptic number.

It is an amenable number.

57857856717 is a deficient number, since it is larger than the sum of its proper divisors (21167508723).

57857856717 is a wasteful number, since it uses less digits than its factorization.

57857856717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470389123.

The product of its digits is 115248000, while the sum is 66.

The spelling of 57857856717 in words is "fifty-seven billion, eight hundred fifty-seven million, eight hundred fifty-six thousand, seven hundred seventeen".