77455103389 has 2 divisors, whose sum is σ = 77455103390. Its totient is φ = 77455103388.

The previous prime is 77455103321. The next prime is 77455103399. The reversal of 77455103389 is 98330155477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75450750489 + 2004352900 = 274683^2 + 44770^2 .

It is a cyclic number.

It is not a de Polignac number, because 77455103389 - 2⁹ = 77455102877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77455103309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38727551694 + 38727551695.

It is an arithmetic number, because the mean of its divisors is an integer number (38727551695).

Almost surely, 2^77455103389 is an apocalyptic number.

It is an amenable number.

77455103389 is a deficient number, since it is larger than the sum of its proper divisors (1).

77455103389 is an equidigital number, since it uses as much as digits as its factorization.

77455103389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 77455103389 in words is "seventy-seven billion, four hundred fifty-five million, one hundred three thousand, three hundred eighty-nine".