77000777777 has 8 divisors (see below), whose sum is σ = 96000969792. Its totient is φ = 60000606000.

The previous prime is 77000777771. The next prime is 77000777779. The reversal of 77000777777 is 77777700077.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77000777777 - 2⁸ = 77000777521 is a prime.

77000777777 is a modest number, since divided by 777777 gives 77000 as remainder.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (77000777771) 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 in 7 ways as a sum of consecutive naturals, for example, 500004974 + ... + 500005127.

It is an arithmetic number, because the mean of its divisors is an integer number (12000121224).

Almost surely, 2^77000777777 is an apocalyptic number.

77000777777 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

77000777777 is a deficient number, since it is larger than the sum of its proper divisors (19000192015).

77000777777 is a wasteful number, since it uses less digits than its factorization.

77000777777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000010119.

The product of its (nonzero) digits is 5764801, while the sum is 56.

The spelling of 77000777777 in words is "seventy-seven billion, seven hundred seventy-seven thousand, seven hundred seventy-seven".