20196136800 has 432 divisors, whose sum is σ = 83292168960. Its totient is φ = 4508421120.

The previous prime is 20196136787. The next prime is 20196136841. The reversal of 20196136800 is 863169102.

20196136800 is a `hidden beast` number, since 20 + 19 + 613 + 6 + 8 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2162541 + ... + 2171859.

Almost surely, 2^20196136800 is an apocalyptic number.

20196136800 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 20196136800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41646084480).

20196136800 is an abundant number, since it is smaller than the sum of its proper divisors (63096032160).

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

20196136800 is a wasteful number, since it uses less digits than its factorization.

20196136800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9395 (or 9379 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 20196136800 in words is "twenty billion, one hundred ninety-six million, one hundred thirty-six thousand, eight hundred".