51612452713 has 2 divisors, whose sum is σ = 51612452714. Its totient is φ = 51612452712.

The previous prime is 51612452687. The next prime is 51612452719. The reversal of 51612452713 is 31725421615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45904348009 + 5708104704 = 214253^2 + 75552^2 .

It is a cyclic number.

It is not a de Polignac number, because 51612452713 - 2⁵ = 51612452681 is a prime.

It is a super-2 number, since 2×51612452713² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51612452719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25806226356 + 25806226357.

It is an arithmetic number, because the mean of its divisors is an integer number (25806226357).

Almost surely, 2^51612452713 is an apocalyptic number.

It is an amenable number.

51612452713 is a deficient number, since it is larger than the sum of its proper divisors (1).

51612452713 is an equidigital number, since it uses as much as digits as its factorization.

51612452713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The spelling of 51612452713 in words is "fifty-one billion, six hundred twelve million, four hundred fifty-two thousand, seven hundred thirteen".