51063879161 has 2 divisors, whose sum is σ = 51063879162. Its totient is φ = 51063879160.

The previous prime is 51063879137. The next prime is 51063879193. The reversal of 51063879161 is 16197836015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39434413561 + 11629465600 = 198581^2 + 107840^2 .

It is a cyclic number.

It is not a de Polignac number, because 51063879161 - 2¹⁰ = 51063878137 is a prime.

It is not a weakly prime, because it can be changed into another prime (51063879121) 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, 25531939580 + 25531939581.

It is an arithmetic number, because the mean of its divisors is an integer number (25531939581).

Almost surely, 2^51063879161 is an apocalyptic number.

It is an amenable number.

51063879161 is a deficient number, since it is larger than the sum of its proper divisors (1).

51063879161 is an equidigital number, since it uses as much as digits as its factorization.

51063879161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 51063879161 in words is "fifty-one billion, sixty-three million, eight hundred seventy-nine thousand, one hundred sixty-one".