8218768077 has 24 divisors (see below), whose sum is σ = 12825915648. Its totient is φ = 5041418400.

The previous prime is 8218768069. The next prime is 8218768091. The reversal of 8218768077 is 7708678128.

It is not a de Polignac number, because 8218768077 - 2³ = 8218768069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218768007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76549 + ... + 149322.

It is an arithmetic number, because the mean of its divisors is an integer number (534413152).

Almost surely, 2^8218768077 is an apocalyptic number.

It is an amenable number.

8218768077 is a deficient number, since it is larger than the sum of its proper divisors (4607147571).

8218768077 is a wasteful number, since it uses less digits than its factorization.

8218768077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226201 (or 226198 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 54.

The square root of 8218768077 is about 90657.4215219030. The cubic root of 8218768077 is about 2018.0669738659.

The spelling of 8218768077 in words is "eight billion, two hundred eighteen million, seven hundred sixty-eight thousand, seventy-seven".