502638804396 has 18 divisors (see below), whose sum is σ = 1270559200092. Its totient is φ = 167546268120.

The previous prime is 502638804391. The next prime is 502638804397. The reversal of 502638804396 is 693408836205.

502638804396 is a `hidden beast` number, since 502 + 6 + 3 + 8 + 8 + 0 + 43 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (502638804391) 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 5 ways as a sum of consecutive naturals, for example, 6981094470 + ... + 6981094541.

Almost surely, 2^502638804396 is an apocalyptic number.

It is an amenable number.

502638804396 is an abundant number, since it is smaller than the sum of its proper divisors (767920395696).

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

502638804396 is a wasteful number, since it uses less digits than its factorization.

502638804396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13962189021 (or 13962189016 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 502638804396 in words is "five hundred two billion, six hundred thirty-eight million, eight hundred four thousand, three hundred ninety-six".