766477016321 has 16 divisors (see below), whose sum is σ = 817530174720. Its totient is φ = 716088403200.

The previous prime is 766477016317. The next prime is 766477016351. The reversal of 766477016321 is 123610774667.

It is a cyclic number.

It is not a de Polignac number, because 766477016321 - 2² = 766477016317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766477016321.

It is not an unprimeable number, because it can be changed into a prime (766477016351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17741096 + ... + 17784246.

It is an arithmetic number, because the mean of its divisors is an integer number (51095635920).

Almost surely, 2^766477016321 is an apocalyptic number.

It is an amenable number.

766477016321 is a deficient number, since it is larger than the sum of its proper divisors (51053158399).

766477016321 is a wasteful number, since it uses less digits than its factorization.

766477016321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50824.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 766477016321 in words is "seven hundred sixty-six billion, four hundred seventy-seven million, sixteen thousand, three hundred twenty-one".