5156561623 has 2 divisors, whose sum is σ = 5156561624. Its totient is φ = 5156561622.

The previous prime is 5156561611. The next prime is 5156561633. The reversal of 5156561623 is 3261656515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5156561623 - 2¹⁷ = 5156430551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5156561633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578280811 + 2578280812.

It is an arithmetic number, because the mean of its divisors is an integer number (2578280812).

Almost surely, 2^5156561623 is an apocalyptic number.

5156561623 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156561623 is an equidigital number, since it uses as much as digits as its factorization.

5156561623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 40.

The square root of 5156561623 is about 71809.2029129972. The cubic root of 5156561623 is about 1727.6406099826.

The spelling of 5156561623 in words is "five billion, one hundred fifty-six million, five hundred sixty-one thousand, six hundred twenty-three".