51431350507 has 2 divisors, whose sum is σ = 51431350508. Its totient is φ = 51431350506.

The previous prime is 51431350457. The next prime is 51431350519. The reversal of 51431350507 is 70505313415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51431350507 - 2¹⁵ = 51431317739 is a prime.

It is not a weakly prime, because it can be changed into another prime (51431350207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715675253 + 25715675254.

It is an arithmetic number, because the mean of its divisors is an integer number (25715675254).

Almost surely, 2^51431350507 is an apocalyptic number.

51431350507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51431350507 is an equidigital number, since it uses as much as digits as its factorization.

51431350507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 34.

The spelling of 51431350507 in words is "fifty-one billion, four hundred thirty-one million, three hundred fifty thousand, five hundred seven".