51504122347 has 2 divisors, whose sum is σ = 51504122348. Its totient is φ = 51504122346.

The previous prime is 51504122321. The next prime is 51504122413. The reversal of 51504122347 is 74322140515.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51504122347 is a prime.

It is not a weakly prime, because it can be changed into another prime (51504102347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752061173 + 25752061174.

It is an arithmetic number, because the mean of its divisors is an integer number (25752061174).

Almost surely, 2^51504122347 is an apocalyptic number.

51504122347 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504122347 is an equidigital number, since it uses as much as digits as its factorization.

51504122347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 51504122347 in words is "fifty-one billion, five hundred four million, one hundred twenty-two thousand, three hundred forty-seven".