51013663061 has 2 divisors, whose sum is σ = 51013663062. Its totient is φ = 51013663060.

The previous prime is 51013663033. The next prime is 51013663069. The reversal of 51013663061 is 16036631015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41312595025 + 9701068036 = 203255^2 + 98494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51013663061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51013663069) 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, 25506831530 + 25506831531.

It is an arithmetic number, because the mean of its divisors is an integer number (25506831531).

Almost surely, 2^51013663061 is an apocalyptic number.

It is an amenable number.

51013663061 is a deficient number, since it is larger than the sum of its proper divisors (1).

51013663061 is an equidigital number, since it uses as much as digits as its factorization.

51013663061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 51013663061 in words is "fifty-one billion, thirteen million, six hundred sixty-three thousand, sixty-one".