77760843731066 has 16 divisors (see below), whose sum is σ = 123502877018856. Its totient is φ = 36593231410176.

The previous prime is 77760843730991. The next prime is 77760843731107. The reversal of 77760843731066 is 66013734806777.

It can be written as a sum of positive squares in 4 ways, for example, as 77546956905625 + 213886825441 = 8806075^2 + 462479^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77760843730993 and 77760843731011.

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, 9159170 + ... + 15472946.

Almost surely, 2^{77760843731066} is an apocalyptic number.

77760843731066 is a deficient number, since it is larger than the sum of its proper divisors (45742033287790).

77760843731066 is a wasteful number, since it uses less digits than its factorization.

77760843731066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6676033.

The product of its (nonzero) digits is 149361408, while the sum is 65.

The spelling of 77760843731066 in words is "seventy-seven trillion, seven hundred sixty billion, eight hundred forty-three million, seven hundred thirty-one thousand, sixty-six".