4631438505791 has 2 divisors, whose sum is σ = 4631438505792. Its totient is φ = 4631438505790.

The previous prime is 4631438505773. The next prime is 4631438505899. The reversal of 4631438505791 is 1975058341364.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4631438505791 - 2³⁴ = 4614258636607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4631438505721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2315719252895 + 2315719252896.

It is an arithmetic number, because the mean of its divisors is an integer number (2315719252896).

Almost surely, 2^{4631438505791} is an apocalyptic number.

4631438505791 is a deficient number, since it is larger than the sum of its proper divisors (1).

4631438505791 is an equidigital number, since it uses as much as digits as its factorization.

4631438505791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 4631438505791 in words is "four trillion, six hundred thirty-one billion, four hundred thirty-eight million, five hundred five thousand, seven hundred ninety-one".