51210769068853 has 2 divisors, whose sum is σ = 51210769068854. Its totient is φ = 51210769068852.

The previous prime is 51210769068841. The next prime is 51210769068931. The reversal of 51210769068853 is 35886096701215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43835297197329 + 7375471871524 = 6620823^2 + 2715782^2 .

It is a cyclic number.

It is not a de Polignac number, because 51210769068853 - 2¹⁷ = 51210768937781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51210769068791 and 51210769068800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51210769068253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25605384534426 + 25605384534427.

It is an arithmetic number, because the mean of its divisors is an integer number (25605384534427).

Almost surely, 2^{51210769068853} is an apocalyptic number.

It is an amenable number.

51210769068853 is a deficient number, since it is larger than the sum of its proper divisors (1).

51210769068853 is an equidigital number, since it uses as much as digits as its factorization.

51210769068853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 51210769068853 in words is "fifty-one trillion, two hundred ten billion, seven hundred sixty-nine million, sixty-eight thousand, eight hundred fifty-three".