20009469203136 has 224 divisors, whose sum is σ = 67466837237760. Its totient is φ = 5696645068800.

The previous prime is 20009469203131. The next prime is 20009469203137. The reversal of 20009469203136 is 63130296490002.

20009469203136 is a `hidden beast` number, since 200 + 0 + 9 + 46 + 92 + 0 + 313 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a junction number, because it is equal to n+sod(n) for n = 20009469203091 and 20009469203100.

It is not an unprimeable number, because it can be changed into a prime (20009469203131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 455521 + ... + 6342431.

Almost surely, 2^{20009469203136} 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 20009469203136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33733418618880).

20009469203136 is an abundant number, since it is smaller than the sum of its proper divisors (47457368034624).

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

20009469203136 is a wasteful number, since it uses less digits than its factorization.

20009469203136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887220 (or 5887204 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 20009469203136 in words is "twenty trillion, nine billion, four hundred sixty-nine million, two hundred three thousand, one hundred thirty-six".