51020767673 has 2 divisors, whose sum is σ = 51020767674. Its totient is φ = 51020767672.

The previous prime is 51020767663. The next prime is 51020767691. The reversal of 51020767673 is 37676702015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50423600704 + 597166969 = 224552^2 + 24437^2 .

It is a cyclic number.

It is not a de Polignac number, because 51020767673 - 2¹⁴ = 51020751289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51020767613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510383836 + 25510383837.

It is an arithmetic number, because the mean of its divisors is an integer number (25510383837).

Almost surely, 2^51020767673 is an apocalyptic number.

It is an amenable number.

51020767673 is a deficient number, since it is larger than the sum of its proper divisors (1).

51020767673 is an equidigital number, since it uses as much as digits as its factorization.

51020767673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 370440, while the sum is 44.

The spelling of 51020767673 in words is "fifty-one billion, twenty million, seven hundred sixty-seven thousand, six hundred seventy-three".