51630316511693 has 2 divisors, whose sum is σ = 51630316511694. Its totient is φ = 51630316511692.

The previous prime is 51630316511663. The next prime is 51630316511723. The reversal of 51630316511693 is 39611561303615.

It is a balanced prime because it is at equal distance from previous prime (51630316511663) and next prime (51630316511723).

It can be written as a sum of positive squares in only one way, i.e., 28321533952804 + 23308782558889 = 5321798^2 + 4827917^2 .

It is a cyclic number.

It is not a de Polignac number, because 51630316511693 - 2¹⁸ = 51630316249549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51630316511663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25815158255846 + 25815158255847.

It is an arithmetic number, because the mean of its divisors is an integer number (25815158255847).

Almost surely, 2^{51630316511693} is an apocalyptic number.

It is an amenable number.

51630316511693 is a deficient number, since it is larger than the sum of its proper divisors (1).

51630316511693 is an equidigital number, since it uses as much as digits as its factorization.

51630316511693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1312200, while the sum is 50.

The spelling of 51630316511693 in words is "fifty-one trillion, six hundred thirty billion, three hundred sixteen million, five hundred eleven thousand, six hundred ninety-three".