78825648889753 has 2 divisors, whose sum is σ = 78825648889754. Its totient is φ = 78825648889752.

The previous prime is 78825648889747. The next prime is 78825648889861. The reversal of 78825648889753 is 35798884652887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43282017314649 + 35543631575104 = 6578907^2 + 5961848^2 .

It is a cyclic number.

It is not a de Polignac number, because 78825648889753 - 2⁴⁵ = 43641276800921 is a prime.

It is not a weakly prime, because it can be changed into another prime (78825648881753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39412824444876 + 39412824444877.

It is an arithmetic number, because the mean of its divisors is an integer number (39412824444877).

Almost surely, 2^{78825648889753} is an apocalyptic number.

It is an amenable number.

78825648889753 is a deficient number, since it is larger than the sum of its proper divisors (1).

78825648889753 is an equidigital number, since it uses as much as digits as its factorization.

78825648889753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52022476800, while the sum is 88.

The spelling of 78825648889753 in words is "seventy-eight trillion, eight hundred twenty-five billion, six hundred forty-eight million, eight hundred eighty-nine thousand, seven hundred fifty-three".