7770000077777 has 32 divisors (see below), whose sum is σ = 9162080059392. Its totient is φ = 6451421324544.

The previous prime is 7770000077771. The next prime is 7770000077803. The reversal of 7770000077777 is 7777700000777.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-7770000077777 is a prime.

It is a Duffinian number.

7770000077777 is a modest number, since divided by 77777 gives 777 as remainder.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (7770000077771) 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 31 ways as a sum of consecutive naturals, for example, 61713113 + ... + 61838889.

It is an arithmetic number, because the mean of its divisors is an integer number (286315001856).

Almost surely, 2^{7770000077777} is an apocalyptic number.

It is an amenable number.

7770000077777 is a deficient number, since it is larger than the sum of its proper divisors (1392079981615).

7770000077777 is a wasteful number, since it uses less digits than its factorization.

7770000077777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127757.

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

It can be divided in two parts, 77700000 and 77777, that added together give a palindrome (77777777).

The spelling of 7770000077777 in words is "seven trillion, seven hundred seventy billion, seventy-seven thousand, seven hundred seventy-seven".