107801985805873 has 2 divisors, whose sum is σ = 107801985805874. Its totient is φ = 107801985805872.

The previous prime is 107801985805859. The next prime is 107801985805897. The reversal of 107801985805873 is 378508589108701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72539493408144 + 35262492397729 = 8517012^2 + 5938223^2 .

It is a cyclic number.

It is not a de Polignac number, because 107801985805873 - 2⁵ = 107801985805841 is a prime.

It is not a weakly prime, because it can be changed into another prime (107801985805823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53900992902936 + 53900992902937.

It is an arithmetic number, because the mean of its divisors is an integer number (53900992902937).

Almost surely, 2^{107801985805873} is an apocalyptic number.

It is an amenable number.

107801985805873 is a deficient number, since it is larger than the sum of its proper divisors (1).

107801985805873 is an equidigital number, since it uses as much as digits as its factorization.

107801985805873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135475200, while the sum is 70.

The spelling of 107801985805873 in words is "one hundred seven trillion, eight hundred one billion, nine hundred eighty-five million, eight hundred five thousand, eight hundred seventy-three".