51015311029 has 2 divisors, whose sum is σ = 51015311030. Its totient is φ = 51015311028.

The previous prime is 51015310987. The next prime is 51015311063. The reversal of 51015311029 is 92011351015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43734102129 + 7281208900 = 209127^2 + 85330^2 .

It is a cyclic number.

It is not a de Polignac number, because 51015311029 - 2⁷ = 51015310901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51015310988 and 51015311006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51015311129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25507655514 + 25507655515.

It is an arithmetic number, because the mean of its divisors is an integer number (25507655515).

Almost surely, 2^51015311029 is an apocalyptic number.

It is an amenable number.

51015311029 is a deficient number, since it is larger than the sum of its proper divisors (1).

51015311029 is an equidigital number, since it uses as much as digits as its factorization.

51015311029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 28.

The spelling of 51015311029 in words is "fifty-one billion, fifteen million, three hundred eleven thousand, twenty-nine".