77453105089 has 2 divisors, whose sum is σ = 77453105090. Its totient is φ = 77453105088.

The previous prime is 77453105077. The next prime is 77453105099. The reversal of 77453105089 is 98050135477.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51885095089 + 25568010000 = 227783^2 + 159900^2 .

It is a cyclic number.

It is not a de Polignac number, because 77453105089 - 2¹⁷ = 77452974017 is a prime.

It is not a weakly prime, because it can be changed into another prime (77453105099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38726552544 + 38726552545.

It is an arithmetic number, because the mean of its divisors is an integer number (38726552545).

Almost surely, 2^77453105089 is an apocalyptic number.

It is an amenable number.

77453105089 is a deficient number, since it is larger than the sum of its proper divisors (1).

77453105089 is an equidigital number, since it uses as much as digits as its factorization.

77453105089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 77453105089 in words is "seventy-seven billion, four hundred fifty-three million, one hundred five thousand, eighty-nine".