51254406871 has 2 divisors, whose sum is σ = 51254406872. Its totient is φ = 51254406870.

The previous prime is 51254406869. The next prime is 51254406877. The reversal of 51254406871 is 17860445215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51254406871 - 2¹ = 51254406869 is a prime.

Together with 51254406869, 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 (51254406877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25627203435 + 25627203436.

It is an arithmetic number, because the mean of its divisors is an integer number (25627203436).

Almost surely, 2^51254406871 is an apocalyptic number.

51254406871 is a deficient number, since it is larger than the sum of its proper divisors (1).

51254406871 is an equidigital number, since it uses as much as digits as its factorization.

51254406871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 51254406871 in words is "fifty-one billion, two hundred fifty-four million, four hundred six thousand, eight hundred seventy-one".