872821627417 has 2 divisors, whose sum is σ = 872821627418. Its totient is φ = 872821627416.

The previous prime is 872821627351. The next prime is 872821627463. The reversal of 872821627417 is 714726128278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680342879241 + 192478748176 = 824829^2 + 438724^2 .

It is a cyclic number.

It is not a de Polignac number, because 872821627417 - 2¹⁹ = 872821103129 is a prime.

It is not a weakly prime, because it can be changed into another prime (872821627477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436410813708 + 436410813709.

It is an arithmetic number, because the mean of its divisors is an integer number (436410813709).

Almost surely, 2^872821627417 is an apocalyptic number.

It is an amenable number.

872821627417 is a deficient number, since it is larger than the sum of its proper divisors (1).

872821627417 is an equidigital number, since it uses as much as digits as its factorization.

872821627417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4214784, while the sum is 55.

The spelling of 872821627417 in words is "eight hundred seventy-two billion, eight hundred twenty-one million, six hundred twenty-seven thousand, four hundred seventeen".