636804000000 has 1701 divisors, whose sum is σ = 2817659851461. Its totient is φ = 137894400000.

The previous prime is 636803999987. The next prime is 636804000013. The reversal of 636804000000 is 408636.

The square root of 636804000000 is 798000.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (636803999987) and next prime (636804000013).

It can be written as a sum of positive squares in 3 ways, for example, as 557901437184 + 78902562816 = 746928^2 + 280896^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 33515999991 + ... + 33516000009.

Almost surely, 2^636804000000 is an apocalyptic number.

636804000000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

636804000000 is the 798000-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636804000000

636804000000 is an abundant number, since it is smaller than the sum of its proper divisors (2180855851461).

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

636804000000 is an frugal number, since it uses more digits than its factorization.

636804000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 636804000000 its reverse (408636), we get a palindrome (636804408636).

The spelling of 636804000000 in words is "six hundred thirty-six billion, eight hundred four million", and thus it is an aban number.