109078974950489 has 2 divisors, whose sum is σ = 109078974950490. Its totient is φ = 109078974950488.

The previous prime is 109078974950377. The next prime is 109078974950551. The reversal of 109078974950489 is 984059479870901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93684337990489 + 15394636960000 = 9679067^2 + 3923600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109078974950489 is a prime.

It is not a weakly prime, because it can be changed into another prime (109078974950089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54539487475244 + 54539487475245.

It is an arithmetic number, because the mean of its divisors is an integer number (54539487475245).

Almost surely, 2^{109078974950489} is an apocalyptic number.

It is an amenable number.

109078974950489 is a deficient number, since it is larger than the sum of its proper divisors (1).

109078974950489 is an equidigital number, since it uses as much as digits as its factorization.

109078974950489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646023680, while the sum is 80.

The spelling of 109078974950489 in words is "one hundred nine trillion, seventy-eight billion, nine hundred seventy-four million, nine hundred fifty thousand, four hundred eighty-nine".