775248769553441 has 2 divisors, whose sum is σ = 775248769553442. Its totient is φ = 775248769553440.

The previous prime is 775248769553387. The next prime is 775248769553569. The reversal of 775248769553441 is 144355967842577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 750075430125025 + 25173339428416 = 27387505^2 + 5017304^2 .

It is a cyclic number.

It is not a de Polignac number, because 775248769553441 - 2²² = 775248765359137 is a prime.

It is not a weakly prime, because it can be changed into another prime (775248769555441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387624384776720 + 387624384776721.

It is an arithmetic number, because the mean of its divisors is an integer number (387624384776721).

Almost surely, 2^{775248769553441} is an apocalyptic number.

It is an amenable number.

775248769553441 is a deficient number, since it is larger than the sum of its proper divisors (1).

775248769553441 is an equidigital number, since it uses as much as digits as its factorization.

775248769553441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448000, while the sum is 77.

The spelling of 775248769553441 in words is "seven hundred seventy-five trillion, two hundred forty-eight billion, seven hundred sixty-nine million, five hundred fifty-three thousand, four hundred forty-one".