77111518848 has 1024 divisors, whose sum is σ = 282693734400. Its totient is φ = 18059231232.

The previous prime is 77111518823. The next prime is 77111518877. The reversal of 77111518848 is 84881511177.

It is a self number, because there is not a number n which added to its sum of digits gives 77111518848.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1056322140 + ... + 1056322212.

It is an arithmetic number, because the mean of its divisors is an integer number (276068100).

Almost surely, 2^77111518848 is an apocalyptic number.

77111518848 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77111518848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141346867200).

77111518848 is an abundant number, since it is smaller than the sum of its proper divisors (205582215552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77111518848 is a wasteful number, since it uses less digits than its factorization.

77111518848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 197 counting only the distinct ones).

The product of its digits is 501760, while the sum is 51.

The spelling of 77111518848 in words is "seventy-seven billion, one hundred eleven million, five hundred eighteen thousand, eight hundred forty-eight".