77755075166 has 64 divisors (see below), whose sum is σ = 128174289408. Its totient is φ = 35264896128.

The previous prime is 77755075109. The next prime is 77755075169. The reversal of 77755075166 is 66157055777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77755075169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47789645 + ... + 47791271.

It is an arithmetic number, because the mean of its divisors is an integer number (2002723272).

Almost surely, 2^77755075166 is an apocalyptic number.

77755075166 is a deficient number, since it is larger than the sum of its proper divisors (50419214242).

77755075166 is a wasteful number, since it uses less digits than its factorization.

77755075166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 10804500, while the sum is 56.

The spelling of 77755075166 in words is "seventy-seven billion, seven hundred fifty-five million, seventy-five thousand, one hundred sixty-six".