20551053600 has 864 divisors, whose sum is σ = 95153909760. Its totient is φ = 4043520000.

The previous prime is 20551053583. The next prime is 20551053623. The reversal of 20551053600 is 635015502.

20551053600 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 1 + 0 + 53 + 600 = 666.

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, 10532625 + ... + 10534575.

It is an arithmetic number, because the mean of its divisors is an integer number (110131840).

Almost surely, 2^20551053600 is an apocalyptic number.

20551053600 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 20551053600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47576954880).

20551053600 is an abundant number, since it is smaller than the sum of its proper divisors (74602856160).

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

20551053600 is a wasteful number, since it uses less digits than its factorization.

20551053600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014 (or 1998 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 20551053600 in words is "twenty billion, five hundred fifty-one million, fifty-three thousand, six hundred".