322107812747681 has 4 divisors (see below), whose sum is σ = 322673907322500. Its totient is φ = 321541718172864.

The previous prime is 322107812747593. The next prime is 322107812747683. The reversal of 322107812747681 is 186747218701223.

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 51955855057681 + 270151957690000 = 7208041^2 + 16436300^2 .

It is a cyclic number.

It is not a de Polignac number, because 322107812747681 - 2³⁸ = 321832934840737 is a prime.

It is a super-2 number, since 2×322107812747681² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 322107812747681.

It is not an unprimeable number, because it can be changed into a prime (322107812747683) 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, 283047286556 + ... + 283047287693.

It is an arithmetic number, because the mean of its divisors is an integer number (80668476830625).

Almost surely, 2^{322107812747681} is an apocalyptic number.

It is an amenable number.

322107812747681 is a deficient number, since it is larger than the sum of its proper divisors (566094574819).

322107812747681 is an equidigital number, since it uses as much as digits as its factorization.

322107812747681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566094574818.

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 322107812747681 in words is "three hundred twenty-two trillion, one hundred seven billion, eight hundred twelve million, seven hundred forty-seven thousand, six hundred eighty-one".