63938433445 has 8 divisors (see below), whose sum is σ = 76737016440. Its totient is φ = 51143482560.

The previous prime is 63938433439. The next prime is 63938433473. The reversal of 63938433445 is 54433483936.

It can be written as a sum of positive squares in 4 ways, for example, as 3297400929 + 60641032516 = 57423^2 + 246254^2 .

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

It is not a de Polignac number, because 63938433445 - 2³ = 63938433437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63938433392 and 63938433401.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 869146 + ... + 939835.

It is an arithmetic number, because the mean of its divisors is an integer number (9592127055).

Almost surely, 2^63938433445 is an apocalyptic number.

It is an amenable number.

63938433445 is a deficient number, since it is larger than the sum of its proper divisors (12798582995).

63938433445 is a wasteful number, since it uses less digits than its factorization.

63938433445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816055.

The product of its digits is 11197440, while the sum is 52.

The spelling of 63938433445 in words is "sixty-three billion, nine hundred thirty-eight million, four hundred thirty-three thousand, four hundred forty-five".