57218220713 has 4 divisors (see below), whose sum is σ = 60583998420. Its totient is φ = 53852443008.

The previous prime is 57218220677. The next prime is 57218220733. The reversal of 57218220713 is 31702281275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52581700249 + 4636520464 = 229307^2 + 68092^2 .

It is a cyclic number.

It is not a de Polignac number, because 57218220713 - 2⁶ = 57218220649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57218220733) 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, 1682888828 + ... + 1682888861.

It is an arithmetic number, because the mean of its divisors is an integer number (15145999605).

Almost surely, 2^57218220713 is an apocalyptic number.

It is an amenable number.

57218220713 is a deficient number, since it is larger than the sum of its proper divisors (3365777707).

57218220713 is a wasteful number, since it uses less digits than its factorization.

57218220713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365777706.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 57218220713 in words is "fifty-seven billion, two hundred eighteen million, two hundred twenty thousand, seven hundred thirteen".