5156611611061 has 2 divisors, whose sum is σ = 5156611611062. Its totient is φ = 5156611611060.

The previous prime is 5156611611043. The next prime is 5156611611077. The reversal of 5156611611061 is 1601161166515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4133064604036 + 1023547007025 = 2032994^2 + 1011705^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156611611061 - 2¹⁹ = 5156611086773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5156611611461) 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, 2578305805530 + 2578305805531.

It is an arithmetic number, because the mean of its divisors is an integer number (2578305805531).

Almost surely, 2^{5156611611061} is an apocalyptic number.

It is an amenable number.

5156611611061 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156611611061 is an equidigital number, since it uses as much as digits as its factorization.

5156611611061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 40.

Adding to 5156611611061 its reverse (1601161166515), we get a palindrome (6757772777576).

The spelling of 5156611611061 in words is "five trillion, one hundred fifty-six billion, six hundred eleven million, six hundred eleven thousand, sixty-one".