51076739993 has 2 divisors, whose sum is σ = 51076739994. Its totient is φ = 51076739992.

The previous prime is 51076739981. The next prime is 51076740019. The reversal of 51076739993 is 39993767015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50799750544 + 276989449 = 225388^2 + 16643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51076739993 is a prime.

It is not a weakly prime, because it can be changed into another prime (51076739093) 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, 25538369996 + 25538369997.

It is an arithmetic number, because the mean of its divisors is an integer number (25538369997).

Almost surely, 2^51076739993 is an apocalyptic number.

It is an amenable number.

51076739993 is a deficient number, since it is larger than the sum of its proper divisors (1).

51076739993 is an equidigital number, since it uses as much as digits as its factorization.

51076739993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9644670, while the sum is 59.

The spelling of 51076739993 in words is "fifty-one billion, seventy-six million, seven hundred thirty-nine thousand, nine hundred ninety-three".