77380610866 has 32 divisors (see below), whose sum is σ = 126014144256. Its totient is φ = 35424480000.

The previous prime is 77380610831. The next prime is 77380610899. The reversal of 77380610866 is 66801608377.

It is a super-3 number, since 3×77380610866³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9536151 + ... + 9544261.

It is an arithmetic number, because the mean of its divisors is an integer number (3937942008).

Almost surely, 2^77380610866 is an apocalyptic number.

77380610866 is a deficient number, since it is larger than the sum of its proper divisors (48633533390).

77380610866 is a wasteful number, since it uses less digits than its factorization.

77380610866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 77380610866 in words is "seventy-seven billion, three hundred eighty million, six hundred ten thousand, eight hundred sixty-six".