8777777555441 has 2 divisors, whose sum is σ = 8777777555442. Its totient is φ = 8777777555440.

The previous prime is 8777777555419. The next prime is 8777777555567. The reversal of 8777777555441 is 1445557777778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5018428834225 + 3759348721216 = 2240185^2 + 1938904^2 .

It is a cyclic number.

It is not a de Polignac number, because 8777777555441 - 2³⁰ = 8776703813617 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (8777777555411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4388888777720 + 4388888777721.

It is an arithmetic number, because the mean of its divisors is an integer number (4388888777721).

Almost surely, 2^{8777777555441} is an apocalyptic number.

It is an amenable number.

8777777555441 is a deficient number, since it is larger than the sum of its proper divisors (1).

8777777555441 is an equidigital number, since it uses as much as digits as its factorization.

8777777555441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1882384000, while the sum is 74.

The spelling of 8777777555441 in words is "eight trillion, seven hundred seventy-seven billion, seven hundred seventy-seven million, five hundred fifty-five thousand, four hundred forty-one".