57818368209 has 48 divisors (see below), whose sum is σ = 94757888000. Its totient is φ = 30633741216.

The previous prime is 57818368187. The next prime is 57818368213. The reversal of 57818368209 is 90286381875.

It is a happy number.

It is not a de Polignac number, because 57818368209 - 2¹⁷ = 57818237137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57818369209) 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 47 ways as a sum of consecutive naturals, for example, 848592 + ... + 914190.

Almost surely, 2^57818368209 is an apocalyptic number.

It is an amenable number.

57818368209 is a deficient number, since it is larger than the sum of its proper divisors (36939519791).

57818368209 is a wasteful number, since it uses less digits than its factorization.

57818368209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65722 (or 65675 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 57818368209 in words is "fifty-seven billion, eight hundred eighteen million, three hundred sixty-eight thousand, two hundred nine".