20009139415200 has 1152 divisors, whose sum is σ = 82359616147200. Its totient is φ = 4647624376320.

The previous prime is 20009139415159. The next prime is 20009139415201. The reversal of 20009139415200 is 251493190002.

20009139415200 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 9 + 1 + 39 + 415 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20009139415201) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1371139104 + ... + 1371153696.

It is an arithmetic number, because the mean of its divisors is an integer number (71492722350).

Almost surely, 2^{20009139415200} is an apocalyptic number.

20009139415200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20009139415200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41179808073600).

20009139415200 is an abundant number, since it is smaller than the sum of its proper divisors (62350476732000).

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

20009139415200 is a wasteful number, since it uses less digits than its factorization.

20009139415200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14911 (or 14892 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 20009139415200 in words is "twenty trillion, nine billion, one hundred thirty-nine million, four hundred fifteen thousand, two hundred".