766556366871 has 32 divisors (see below), whose sum is σ = 1037714008320. Its totient is φ = 503279806464.

The previous prime is 766556366867. The next prime is 766556366921. The reversal of 766556366871 is 178663655667.

766556366871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 766556366871 - 2² = 766556366867 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766556366861) 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, 80966680 + ... + 80976146.

It is an arithmetic number, because the mean of its divisors is an integer number (32428562760).

Almost surely, 2^766556366871 is an apocalyptic number.

766556366871 is a deficient number, since it is larger than the sum of its proper divisors (271157641449).

766556366871 is a wasteful number, since it uses less digits than its factorization.

766556366871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055.

The product of its digits is 228614400, while the sum is 66.

The spelling of 766556366871 in words is "seven hundred sixty-six billion, five hundred fifty-six million, three hundred sixty-six thousand, eight hundred seventy-one".