63818837496 has 128 divisors (see below), whose sum is σ = 186818880000. Its totient is φ = 20130197760.

The previous prime is 63818837491. The next prime is 63818837497. The reversal of 63818837496 is 69473881836.

63818837496 is a `hidden beast` number, since 6 + 38 + 1 + 88 + 37 + 496 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63818837491) 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 31 ways as a sum of consecutive naturals, for example, 3763116 + ... + 3780036.

It is an arithmetic number, because the mean of its divisors is an integer number (1459522500).

Almost surely, 2^63818837496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63818837496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93409440000).

63818837496 is an abundant number, since it is smaller than the sum of its proper divisors (123000042504).

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

63818837496 is a wasteful number, since it uses less digits than its factorization.

63818837496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17874 (or 17864 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

It can be divided in two parts, 638188 and 37496, that added together give a square (675684 = 822²).

The spelling of 63818837496 in words is "sixty-three billion, eight hundred eighteen million, eight hundred thirty-seven thousand, four hundred ninety-six".