63485888547991 has 32 divisors (see below), whose sum is σ = 78243634022400. Its totient is φ = 50161716633600.

The previous prime is 63485888547979. The next prime is 63485888548013. The reversal of 63485888547991 is 19974588858436.

It is not a de Polignac number, because 63485888547991 - 2⁴⁵ = 28301516459159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63485888547899 and 63485888547908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63485888547931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1461069816 + ... + 1461113266.

It is an arithmetic number, because the mean of its divisors is an integer number (2445113563200).

Almost surely, 2^{63485888547991} is an apocalyptic number.

63485888547991 is a deficient number, since it is larger than the sum of its proper divisors (14757745474409).

63485888547991 is a wasteful number, since it uses less digits than its factorization.

63485888547991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65119.

The product of its digits is 16721510400, while the sum is 85.

The spelling of 63485888547991 in words is "sixty-three trillion, four hundred eighty-five billion, eight hundred eighty-eight million, five hundred forty-seven thousand, nine hundred ninety-one".