77799797109 has 16 divisors (see below), whose sum is σ = 115340012800. Its totient is φ = 51830082684.

The previous prime is 77799797081. The next prime is 77799797123. The reversal of 77799797109 is 90179799777.

The cubic root of 77799797109 is 4269.

It is a perfect power (a cube), and thus also a powerful number.

It is not a de Polignac number, because 77799797109 - 2⁵ = 77799797077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77799797129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54672372 + ... + 54673794.

It is an arithmetic number, because the mean of its divisors is an integer number (7208750800).

Almost surely, 2^77799797109 is an apocalyptic number.

It is an amenable number.

77799797109 is a deficient number, since it is larger than the sum of its proper divisors (37540215691).

77799797109 is an frugal number, since it uses more digits than its factorization.

77799797109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 110270727, while the sum is 72.

The spelling of 77799797109 in words is "seventy-seven billion, seven hundred ninety-nine million, seven hundred ninety-seven thousand, one hundred nine".