8077777968 has 40 divisors (see below), whose sum is σ = 22472794288. Its totient is φ = 2485469952.

The previous prime is 8077777957. The next prime is 8077777979. The reversal of 8077777968 is 8697777708.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8077777957) and next prime (8077777979).

It is a junction number, because it is equal to n+sod(n) for n = 8077777899 and 8077777908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6471955 + ... + 6473202.

Almost surely, 2^8077777968 is an apocalyptic number.

It is an amenable number.

8077777968 is an abundant number, since it is smaller than the sum of its proper divisors (14395016320).

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

8077777968 is a wasteful number, since it uses less digits than its factorization.

8077777968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12945181 (or 12945175 counting only the distinct ones).

The product of its (nonzero) digits is 58084992, while the sum is 66.

The square root of 8077777968 is about 89876.4594763278. The cubic root of 8077777968 is about 2006.4606051520.

The spelling of 8077777968 in words is "eight billion, seventy-seven million, seven hundred seventy-seven thousand, nine hundred sixty-eight".