51096720879317 has 2 divisors, whose sum is σ = 51096720879318. Its totient is φ = 51096720879316.

The previous prime is 51096720879277. The next prime is 51096720879389. The reversal of 51096720879317 is 71397802769015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47139223371601 + 3957497507716 = 6865801^2 + 1989346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51096720879317 is a prime.

It is a super-2 number, since 2×51096720879317² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51096720879817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25548360439658 + 25548360439659.

It is an arithmetic number, because the mean of its divisors is an integer number (25548360439659).

Almost surely, 2^{51096720879317} is an apocalyptic number.

It is an amenable number.

51096720879317 is a deficient number, since it is larger than the sum of its proper divisors (1).

51096720879317 is an equidigital number, since it uses as much as digits as its factorization.

51096720879317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 51096720879317 in words is "fifty-one trillion, ninety-six billion, seven hundred twenty million, eight hundred seventy-nine thousand, three hundred seventeen".