6771965736321 has 6 divisors (see below), whose sum is σ = 9781728285810. Its totient is φ = 4514643824208.

The previous prime is 6771965736311. The next prime is 6771965736383. The reversal of 6771965736321 is 1236375691776.

6771965736321 is a `hidden beast` number, since 6 + 77 + 196 + 57 + 3 + 6 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6440880576321 + 331085160000 = 2537889^2 + 575400^2 .

It is not a de Polignac number, because 6771965736321 - 2¹⁵ = 6771965703553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6771965736311) 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 5 ways as a sum of consecutive naturals, for example, 376220318676 + ... + 376220318693.

It is an arithmetic number, because the mean of its divisors is an integer number (1630288047635).

Almost surely, 2^{6771965736321} is an apocalyptic number.

It is an amenable number.

6771965736321 is a deficient number, since it is larger than the sum of its proper divisors (3009762549489).

6771965736321 is a wasteful number, since it uses less digits than its factorization.

6771965736321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752440637375 (or 752440637372 counting only the distinct ones).

The product of its digits is 60011280, while the sum is 63.

The spelling of 6771965736321 in words is "six trillion, seven hundred seventy-one billion, nine hundred sixty-five million, seven hundred thirty-six thousand, three hundred twenty-one".