5256542459805 has 32 divisors (see below), whose sum is σ = 10351345154304. Its totient is φ = 2218145389056.

The previous prime is 5256542459767. The next prime is 5256542459821. The reversal of 5256542459805 is 5089542456525.

It is not a de Polignac number, because 5256542459805 - 2¹⁷ = 5256542328733 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 1925472064 + ... + 1925474793.

It is an arithmetic number, because the mean of its divisors is an integer number (323479536072).

Almost surely, 2^{5256542459805} is an apocalyptic number.

It is an amenable number.

5256542459805 is a deficient number, since it is larger than the sum of its proper divisors (5094802694499).

5256542459805 is a wasteful number, since it uses less digits than its factorization.

5256542459805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850946885.

The product of its (nonzero) digits is 86400000, while the sum is 60.

The spelling of 5256542459805 in words is "five trillion, two hundred fifty-six billion, five hundred forty-two million, four hundred fifty-nine thousand, eight hundred five".