20000636000 has 96 divisors (see below), whose sum is σ = 52032419712. Its totient is φ = 7529625600.

The previous prime is 20000635997. The next prime is 20000636011. The reversal of 20000636000 is 63600002.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20000636000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79064 + ... + 215063.

It is an arithmetic number, because the mean of its divisors is an integer number (542004372).

Almost surely, 2^20000636000 is an apocalyptic number.

20000636000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000636000 is an abundant number, since it is smaller than the sum of its proper divisors (32031783712).

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

20000636000 is a wasteful number, since it uses less digits than its factorization.

20000636000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294169 (or 294151 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The spelling of 20000636000 in words is "twenty billion, six hundred thirty-six thousand".