5651965811 has 2 divisors, whose sum is σ = 5651965812. Its totient is φ = 5651965810.

The previous prime is 5651965807. The next prime is 5651965841. The reversal of 5651965811 is 1185691565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5651965811 - 2² = 5651965807 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5651965841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825982905 + 2825982906.

It is an arithmetic number, because the mean of its divisors is an integer number (2825982906).

Almost surely, 2^5651965811 is an apocalyptic number.

5651965811 is a deficient number, since it is larger than the sum of its proper divisors (1).

5651965811 is an equidigital number, since it uses as much as digits as its factorization.

5651965811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 47.

The square root of 5651965811 is about 75179.5571349020. The cubic root of 5651965811 is about 1781.2840344850.

The spelling of 5651965811 in words is "five billion, six hundred fifty-one million, nine hundred sixty-five thousand, eight hundred eleven".