966000000991 has 2 divisors, whose sum is σ = 966000000992. Its totient is φ = 966000000990.

The previous prime is 966000000971. The next prime is 966000001003. The reversal of 966000000991 is 199000000669.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 966000000991 - 2²¹ = 965997903839 is a prime.

It is a super-2 number, since 2×966000000991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966000000961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483000000495 + 483000000496.

It is an arithmetic number, because the mean of its divisors is an integer number (483000000496).

Almost surely, 2^966000000991 is an apocalyptic number.

966000000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

966000000991 is an equidigital number, since it uses as much as digits as its factorization.

966000000991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 40.

The spelling of 966000000991 in words is "nine hundred sixty-six billion, nine hundred ninety-one", and thus it is an aban number.