618822358782271 has 4 divisors (see below), whose sum is σ = 707225552894032. Its totient is φ = 530419164670512.

The previous prime is 618822358782259. The next prime is 618822358782337. The reversal of 618822358782271 is 172287853228816.

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

It is a cyclic number.

It is not a de Polignac number, because 618822358782271 - 2²⁷ = 618822224564543 is a prime.

It is a super-2 number, since 2×618822358782271² (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 618822358782271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618822358782071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44201597055870 + ... + 44201597055883.

It is an arithmetic number, because the mean of its divisors is an integer number (176806388223508).

Almost surely, 2^{618822358782271} is an apocalyptic number.

618822358782271 is a deficient number, since it is larger than the sum of its proper divisors (88403194111761).

618822358782271 is an equidigital number, since it uses as much as digits as its factorization.

618822358782271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88403194111760.

The product of its digits is 289013760, while the sum is 70.

The spelling of 618822358782271 in words is "six hundred eighteen trillion, eight hundred twenty-two billion, three hundred fifty-eight million, seven hundred eighty-two thousand, two hundred seventy-one".