51204850871 has 2 divisors, whose sum is σ = 51204850872. Its totient is φ = 51204850870.

The previous prime is 51204850859. The next prime is 51204850889. The reversal of 51204850871 is 17805840215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51204850871 - 2²² = 51200656567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51204850891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602425435 + 25602425436.

It is an arithmetic number, because the mean of its divisors is an integer number (25602425436).

Almost surely, 2^51204850871 is an apocalyptic number.

51204850871 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204850871 is an equidigital number, since it uses as much as digits as its factorization.

51204850871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 41.

The spelling of 51204850871 in words is "fifty-one billion, two hundred four million, eight hundred fifty thousand, eight hundred seventy-one".