966641753321 has 2 divisors, whose sum is σ = 966641753322. Its totient is φ = 966641753320.

The previous prime is 966641753317. The next prime is 966641753347. The reversal of 966641753321 is 123357146669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 924866890000 + 41774863321 = 961700^2 + 204389^2 .

It is a cyclic number.

It is not a de Polignac number, because 966641753321 - 2² = 966641753317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (966641713321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483320876660 + 483320876661.

It is an arithmetic number, because the mean of its divisors is an integer number (483320876661).

Almost surely, 2^966641753321 is an apocalyptic number.

It is an amenable number.

966641753321 is a deficient number, since it is larger than the sum of its proper divisors (1).

966641753321 is an equidigital number, since it uses as much as digits as its factorization.

966641753321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 53.

The spelling of 966641753321 in words is "nine hundred sixty-six billion, six hundred forty-one million, seven hundred fifty-three thousand, three hundred twenty-one".