5661005011 has 2 divisors, whose sum is σ = 5661005012. Its totient is φ = 5661005010.

The previous prime is 5661004969. The next prime is 5661005029. The reversal of 5661005011 is 1105001665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5661005011 - 2²⁵ = 5627450579 is a prime.

It is a super-2 number, since 2×5661005011² = 64093955469134220242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5661005041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830502505 + 2830502506.

It is an arithmetic number, because the mean of its divisors is an integer number (2830502506).

Almost surely, 2^5661005011 is an apocalyptic number.

5661005011 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661005011 is an equidigital number, since it uses as much as digits as its factorization.

5661005011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 5661005011 is about 75239.6505241751. The cubic root of 5661005011 is about 1782.2331323826.

Adding to 5661005011 its reverse (1105001665), we get a palindrome (6766006676).

The spelling of 5661005011 in words is "five billion, six hundred sixty-one million, five thousand, eleven".