63843834836 has 24 divisors (see below), whose sum is σ = 111942300456. Its totient is φ = 31860377600.

The previous prime is 63843834799. The next prime is 63843834853.

63843834836 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 26258257936 + 37585576900 = 162044^2 + 193870^2 .

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, 5404136 + ... + 5415936.

It is an arithmetic number, because the mean of its divisors is an integer number (4664262519).

Almost surely, 2^63843834836 is an apocalyptic number.

It is an amenable number.

63843834836 is a deficient number, since it is larger than the sum of its proper divisors (48098465620).

63843834836 is a wasteful number, since it uses less digits than its factorization.

63843834836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14299 (or 14297 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 56.

The spelling of 63843834836 in words is "sixty-three billion, eight hundred forty-three million, eight hundred thirty-four thousand, eight hundred thirty-six".