4452178364989 has 2 divisors, whose sum is σ = 4452178364990. Its totient is φ = 4452178364988.

The previous prime is 4452178364987. The next prime is 4452178365029. The reversal of 4452178364989 is 9894638712544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2505224184100 + 1946954180889 = 1582790^2 + 1395333^2 .

It is a cyclic number.

It is not a de Polignac number, because 4452178364989 - 2¹ = 4452178364987 is a prime.

It is a super-2 number, since 2×4452178364989² (a number of 26 digits) contains 22 as substring.

Together with 4452178364987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4452178364987) 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 as a sum of consecutive naturals, namely, 2226089182494 + 2226089182495.

It is an arithmetic number, because the mean of its divisors is an integer number (2226089182495).

Almost surely, 2^{4452178364989} is an apocalyptic number.

It is an amenable number.

4452178364989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4452178364989 is an equidigital number, since it uses as much as digits as its factorization.

4452178364989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 418037760, while the sum is 70.

The spelling of 4452178364989 in words is "four trillion, four hundred fifty-two billion, one hundred seventy-eight million, three hundred sixty-four thousand, nine hundred eighty-nine".