51064144751 has 2 divisors, whose sum is σ = 51064144752. Its totient is φ = 51064144750.

The previous prime is 51064144721. The next prime is 51064144759. The reversal of 51064144751 is 15744146015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51064144751 - 2¹⁰ = 51064143727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51064144759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532072375 + 25532072376.

It is an arithmetic number, because the mean of its divisors is an integer number (25532072376).

Almost surely, 2^51064144751 is an apocalyptic number.

51064144751 is a deficient number, since it is larger than the sum of its proper divisors (1).

51064144751 is an equidigital number, since it uses as much as digits as its factorization.

51064144751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 51064144751 in words is "fifty-one billion, sixty-four million, one hundred forty-four thousand, seven hundred fifty-one".