77777007706 has 16 divisors (see below), whose sum is σ = 118113252768. Its totient is φ = 38406258000.

The previous prime is 77777007691. The next prime is 77777007733. The reversal of 77777007706 is 60770077777.

It is a happy number.

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, 391096 + ... + 555436.

It is an arithmetic number, because the mean of its divisors is an integer number (7382078298).

Almost surely, 2^77777007706 is an apocalyptic number.

77777007706 is a deficient number, since it is larger than the sum of its proper divisors (40336245062).

77777007706 is a wasteful number, since it uses less digits than its factorization.

77777007706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167277.

The product of its (nonzero) digits is 4941258, while the sum is 55.

The spelling of 77777007706 in words is "seventy-seven billion, seven hundred seventy-seven million, seven thousand, seven hundred six".