63813881334 has 32 divisors (see below), whose sum is σ = 147858393600. Its totient is φ = 17982775872.

The previous prime is 63813881333. The next prime is 63813881347. The reversal of 63813881334 is 43318831836.

It is a super-2 number, since 2×63813881334² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63813881333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10403634 + ... + 10409765.

It is an arithmetic number, because the mean of its divisors is an integer number (4620574800).

Almost surely, 2^63813881334 is an apocalyptic number.

63813881334 is an abundant number, since it is smaller than the sum of its proper divisors (84044512266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63813881334 is a wasteful number, since it uses less digits than its factorization.

63813881334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20813484.

The product of its digits is 995328, while the sum is 48.

The spelling of 63813881334 in words is "sixty-three billion, eight hundred thirteen million, eight hundred eighty-one thousand, three hundred thirty-four".