20296490572800 has 1584 divisors, whose sum is σ = 79561797719040. Its totient is φ = 4913894522880.

The previous prime is 20296490572769. The next prime is 20296490572817. The reversal of 20296490572800 is 827509469202.

20296490572800 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 6 + 490 + 5 + 72 + 80 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 87109401484 + ... + 87109401716.

Almost surely, 2^{20296490572800} is an apocalyptic number.

20296490572800 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 20296490572800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39780898859520).

20296490572800 is an abundant number, since it is smaller than the sum of its proper divisors (59265307146240).

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

20296490572800 is a wasteful number, since it uses less digits than its factorization.

20296490572800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 20296490572800 in words is "twenty trillion, two hundred ninety-six billion, four hundred ninety million, five hundred seventy-two thousand, eight hundred".