63884643434 has 8 divisors (see below), whose sum is σ = 101463845508. Its totient is φ = 30063361600.

The previous prime is 63884643421. The next prime is 63884643437. The reversal of 63884643434 is 43434648836.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63244705225 + 639938209 = 251485^2 + 25297^2 .

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

It is not an unprimeable number, because it can be changed into a prime (63884643437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939480017 + ... + 939480084.

Almost surely, 2^63884643434 is an apocalyptic number.

63884643434 is a deficient number, since it is larger than the sum of its proper divisors (37579202074).

63884643434 is a wasteful number, since it uses less digits than its factorization.

63884643434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878960120.

The product of its digits is 15925248, while the sum is 53.

The spelling of 63884643434 in words is "sixty-three billion, eight hundred eighty-four million, six hundred forty-three thousand, four hundred thirty-four".