51316403587 has 2 divisors, whose sum is σ = 51316403588. Its totient is φ = 51316403586.

The previous prime is 51316403581. The next prime is 51316403603. The reversal of 51316403587 is 78530461315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51316403587 - 2⁷ = 51316403459 is a prime.

It is not a weakly prime, because it can be changed into another prime (51316403581) 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, 25658201793 + 25658201794.

It is an arithmetic number, because the mean of its divisors is an integer number (25658201794).

Almost surely, 2^51316403587 is an apocalyptic number.

51316403587 is a deficient number, since it is larger than the sum of its proper divisors (1).

51316403587 is an equidigital number, since it uses as much as digits as its factorization.

51316403587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 51316403587 in words is "fifty-one billion, three hundred sixteen million, four hundred three thousand, five hundred eighty-seven".