538807641887 has 2 divisors, whose sum is σ = 538807641888. Its totient is φ = 538807641886.

The previous prime is 538807641871. The next prime is 538807641913. The reversal of 538807641887 is 788146708835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538807641887 - 2⁴ = 538807641871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538807611887) 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, 269403820943 + 269403820944.

It is an arithmetic number, because the mean of its divisors is an integer number (269403820944).

Almost surely, 2^538807641887 is an apocalyptic number.

538807641887 is a deficient number, since it is larger than the sum of its proper divisors (1).

538807641887 is an equidigital number, since it uses as much as digits as its factorization.

538807641887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72253440, while the sum is 65.

The spelling of 538807641887 in words is "five hundred thirty-eight billion, eight hundred seven million, six hundred forty-one thousand, eight hundred eighty-seven".