77699359819 has 2 divisors, whose sum is σ = 77699359820. Its totient is φ = 77699359818.

The previous prime is 77699359813. The next prime is 77699359849. The reversal of 77699359819 is 91895399677.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77699359819 - 2¹⁵ = 77699327051 is a prime.

It is a super-2 number, since 2×77699359819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77699359813) 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, 38849679909 + 38849679910.

It is an arithmetic number, because the mean of its divisors is an integer number (38849679910).

Almost surely, 2^77699359819 is an apocalyptic number.

77699359819 is a deficient number, since it is larger than the sum of its proper divisors (1).

77699359819 is an equidigital number, since it uses as much as digits as its factorization.

77699359819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 231472080, while the sum is 73.

The spelling of 77699359819 in words is "seventy-seven billion, six hundred ninety-nine million, three hundred fifty-nine thousand, eight hundred nineteen".