9968722811 has 2 divisors, whose sum is σ = 9968722812. Its totient is φ = 9968722810.

The previous prime is 9968722783. The next prime is 9968722853. The reversal of 9968722811 is 1182278699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9968722811 - 2⁶ = 9968722747 is a prime.

It is not a weakly prime, because it can be changed into another prime (9988722811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984361405 + 4984361406.

It is an arithmetic number, because the mean of its divisors is an integer number (4984361406).

Almost surely, 2^9968722811 is an apocalyptic number.

9968722811 is a deficient number, since it is larger than the sum of its proper divisors (1).

9968722811 is an equidigital number, since it uses as much as digits as its factorization.

9968722811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 53.

The square root of 9968722811 is about 99843.4915805732. The cubic root of 9968722811 is about 2152.1861888071.

The spelling of 9968722811 in words is "nine billion, nine hundred sixty-eight million, seven hundred twenty-two thousand, eight hundred eleven".