63419859889 has 3 divisors (see below), whose sum is σ = 63420111723. Its totient is φ = 63419608056.

The previous prime is 63419859829. The next prime is 63419859901. The reversal of 63419859889 is 98895891436.

The square root of 63419859889 is 251833.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 50380047025 + 13039812864 = 224455^2 + 114192^2 .

It is not a de Polignac number, because 63419859889 - 2¹⁷ = 63419728817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63419859829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 125917 + ... + 377749.

It is an arithmetic number, because the mean of its divisors is an integer number (21140037241).

Almost surely, 2^63419859889 is an apocalyptic number.

63419859889 is the 251833-rd square number.

63419859889 is the 125917-th centered octagonal number.

It is an amenable number.

63419859889 is a deficient number, since it is larger than the sum of its proper divisors (251834).

63419859889 is an frugal number, since it uses more digits than its factorization.

63419859889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503666 (or 251833 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 70.

The spelling of 63419859889 in words is "sixty-three billion, four hundred nineteen million, eight hundred fifty-nine thousand, eight hundred eighty-nine".