51315503429 has 2 divisors, whose sum is σ = 51315503430. Its totient is φ = 51315503428.

The previous prime is 51315503401. The next prime is 51315503431. The reversal of 51315503429 is 92430551315.

51315503429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34369452100 + 16946051329 = 185390^2 + 130177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51315503429 is a prime.

Together with 51315503431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51315503392 and 51315503401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51315502429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25657751714 + 25657751715.

It is an arithmetic number, because the mean of its divisors is an integer number (25657751715).

Almost surely, 2^51315503429 is an apocalyptic number.

It is an amenable number.

51315503429 is a deficient number, since it is larger than the sum of its proper divisors (1).

51315503429 is an equidigital number, since it uses as much as digits as its factorization.

51315503429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 51315503429 in words is "fifty-one billion, three hundred fifteen million, five hundred three thousand, four hundred twenty-nine".