8155261554673 has 2 divisors, whose sum is σ = 8155261554674. Its totient is φ = 8155261554672.

The previous prime is 8155261554617. The next prime is 8155261554689. The reversal of 8155261554673 is 3764551625518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7691259449344 + 464002105329 = 2773312^2 + 681177^2 .

It is a cyclic number.

It is not a de Polignac number, because 8155261554673 - 2¹⁷ = 8155261423601 is a prime.

It is not a weakly prime, because it can be changed into another prime (8155261554073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077630777336 + 4077630777337.

It is an arithmetic number, because the mean of its divisors is an integer number (4077630777337).

Almost surely, 2^{8155261554673} is an apocalyptic number.

It is an amenable number.

8155261554673 is a deficient number, since it is larger than the sum of its proper divisors (1).

8155261554673 is an equidigital number, since it uses as much as digits as its factorization.

8155261554673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240000, while the sum is 58.

The spelling of 8155261554673 in words is "eight trillion, one hundred fifty-five billion, two hundred sixty-one million, five hundred fifty-four thousand, six hundred seventy-three".