51827695877 has 2 divisors, whose sum is σ = 51827695878. Its totient is φ = 51827695876.

The previous prime is 51827695859. The next prime is 51827695891. The reversal of 51827695877 is 77859672815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51729408481 + 98287396 = 227441^2 + 9914^2 .

It is a cyclic number.

It is not a de Polignac number, because 51827695877 - 2¹⁶ = 51827630341 is a prime.

It is a super-2 number, since 2×51827695877² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51827595877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913847938 + 25913847939.

It is an arithmetic number, because the mean of its divisors is an integer number (25913847939).

Almost surely, 2^51827695877 is an apocalyptic number.

It is an amenable number.

51827695877 is a deficient number, since it is larger than the sum of its proper divisors (1).

51827695877 is an equidigital number, since it uses as much as digits as its factorization.

51827695877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59270400, while the sum is 65.

The spelling of 51827695877 in words is "fifty-one billion, eight hundred twenty-seven million, six hundred ninety-five thousand, eight hundred seventy-seven".