77327798539 has 2 divisors, whose sum is σ = 77327798540. Its totient is φ = 77327798538.

The previous prime is 77327798497. The next prime is 77327798573. The reversal of 77327798539 is 93589772377.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77327798539 - 2²³ = 77319409931 is a prime.

It is not a weakly prime, because it can be changed into another prime (77327798599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38663899269 + 38663899270.

It is an arithmetic number, because the mean of its divisors is an integer number (38663899270).

Almost surely, 2^77327798539 is an apocalyptic number.

77327798539 is a deficient number, since it is larger than the sum of its proper divisors (1).

77327798539 is an equidigital number, since it uses as much as digits as its factorization.

77327798539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140026320, while the sum is 67.

The spelling of 77327798539 in words is "seventy-seven billion, three hundred twenty-seven million, seven hundred ninety-eight thousand, five hundred thirty-nine".