51012005071 has 2 divisors, whose sum is σ = 51012005072. Its totient is φ = 51012005070.

The previous prime is 51012005069. The next prime is 51012005129. The reversal of 51012005071 is 17050021015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51012005071 - 2¹ = 51012005069 is a prime.

It is a super-2 number, since 2×51012005071² (a number of 22 digits) contains 22 as substring.

Together with 51012005069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51012005971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25506002535 + 25506002536.

It is an arithmetic number, because the mean of its divisors is an integer number (25506002536).

Almost surely, 2^51012005071 is an apocalyptic number.

51012005071 is a deficient number, since it is larger than the sum of its proper divisors (1).

51012005071 is an equidigital number, since it uses as much as digits as its factorization.

51012005071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 22.

Adding to 51012005071 its reverse (17050021015), we get a palindrome (68062026086).

The spelling of 51012005071 in words is "fifty-one billion, twelve million, five thousand, seventy-one".