5806209961 has 2 divisors, whose sum is σ = 5806209962. Its totient is φ = 5806209960.

The previous prime is 5806209947. The next prime is 5806209967. The reversal of 5806209961 is 1699026085.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4867155225 + 939054736 = 69765^2 + 30644^2 .

It is a cyclic number.

It is not a de Polignac number, because 5806209961 - 2¹⁵ = 5806177193 is a prime.

It is a super-2 number, since 2×5806209961² = 67424148222431243042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5806209967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2903104980 + 2903104981.

It is an arithmetic number, because the mean of its divisors is an integer number (2903104981).

Almost surely, 2^5806209961 is an apocalyptic number.

It is an amenable number.

5806209961 is a deficient number, since it is larger than the sum of its proper divisors (1).

5806209961 is an equidigital number, since it uses as much as digits as its factorization.

5806209961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 5806209961 is about 76198.4905427923. The cubic root of 5806209961 is about 1797.3427830692.

The spelling of 5806209961 in words is "five billion, eight hundred six million, two hundred nine thousand, nine hundred sixty-one".