5122018661 has 2 divisors, whose sum is σ = 5122018662. Its totient is φ = 5122018660.

The previous prime is 5122018639. The next prime is 5122018691. The reversal of 5122018661 is 1668102215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4450224100 + 671794561 = 66710^2 + 25919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5122018661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5122018691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561009330 + 2561009331.

It is an arithmetic number, because the mean of its divisors is an integer number (2561009331).

Almost surely, 2^5122018661 is an apocalyptic number.

It is an amenable number.

5122018661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5122018661 is an equidigital number, since it uses as much as digits as its factorization.

5122018661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 5122018661 is about 71568.2797124536. The cubic root of 5122018661 is about 1723.7742364964.

The spelling of 5122018661 in words is "five billion, one hundred twenty-two million, eighteen thousand, six hundred sixty-one".