322385779857 has 4 divisors (see below), whose sum is σ = 429847706480. Its totient is φ = 214923853236.

The previous prime is 322385779847. The next prime is 322385779867. The reversal of 322385779857 is 758977583223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758977583223 = 3 ⋅252992527741.

It is an interprime number because it is at equal distance from previous prime (322385779847) and next prime (322385779867).

It is a de Polignac number, because none of the positive numbers 2^k-322385779857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322385779847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53730963307 + ... + 53730963312.

It is an arithmetic number, because the mean of its divisors is an integer number (107461926620).

Almost surely, 2^322385779857 is an apocalyptic number.

It is an amenable number.

322385779857 is a deficient number, since it is larger than the sum of its proper divisors (107461926623).

322385779857 is a wasteful number, since it uses less digits than its factorization.

322385779857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107461926622.

The product of its digits is 177811200, while the sum is 66.

The spelling of 322385779857 in words is "three hundred twenty-two billion, three hundred eighty-five million, seven hundred seventy-nine thousand, eight hundred fifty-seven".