5665561650031 has 2 divisors, whose sum is σ = 5665561650032. Its totient is φ = 5665561650030.

The previous prime is 5665561650011. The next prime is 5665561650061. The reversal of 5665561650031 is 1300561655665.

5665561650031 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5665561650031 - 2⁵ = 5665561649999 is a prime.

It is a super-2 number, since 2×5665561650031² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5665561650011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832780825015 + 2832780825016.

It is an arithmetic number, because the mean of its divisors is an integer number (2832780825016).

Almost surely, 2^{5665561650031} is an apocalyptic number.

5665561650031 is a deficient number, since it is larger than the sum of its proper divisors (1).

5665561650031 is an equidigital number, since it uses as much as digits as its factorization.

5665561650031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430000, while the sum is 49.

The spelling of 5665561650031 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, six hundred fifty thousand, thirty-one".