77300124809 has 2 divisors, whose sum is σ = 77300124810. Its totient is φ = 77300124808.

The previous prime is 77300124773. The next prime is 77300124817. The reversal of 77300124809 is 90842100377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57586560784 + 19713564025 = 239972^2 + 140405^2 .

It is a cyclic number.

It is not a de Polignac number, because 77300124809 - 2⁸ = 77300124553 is a prime.

It is not a weakly prime, because it can be changed into another prime (77300124899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38650062404 + 38650062405.

It is an arithmetic number, because the mean of its divisors is an integer number (38650062405).

Almost surely, 2^77300124809 is an apocalyptic number.

It is an amenable number.

77300124809 is a deficient number, since it is larger than the sum of its proper divisors (1).

77300124809 is an equidigital number, since it uses as much as digits as its factorization.

77300124809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 77300124809 in words is "seventy-seven billion, three hundred million, one hundred twenty-four thousand, eight hundred nine".