63819444445 has 8 divisors (see below), whose sum is σ = 77632420536. Its totient is φ = 50356164096.

The previous prime is 63819444421. The next prime is 63819444509. The reversal of 63819444445 is 54444491836.

It can be written as a sum of positive squares in 4 ways, for example, as 29510773369 + 34308671076 = 171787^2 + 185226^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63819444445 - 2⁷ = 63819444317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63819444392 and 63819444401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87423532 + ... + 87424261.

It is an arithmetic number, because the mean of its divisors is an integer number (9704052567).

Almost surely, 2^63819444445 is an apocalyptic number.

It is an amenable number.

63819444445 is a deficient number, since it is larger than the sum of its proper divisors (13812976091).

63819444445 is a wasteful number, since it uses less digits than its factorization.

63819444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174847871.

The product of its digits is 6635520, while the sum is 52.

The spelling of 63819444445 in words is "sixty-three billion, eight hundred nineteen million, four hundred forty-four thousand, four hundred forty-five".