20553530300 has 72 divisors (see below), whose sum is σ = 45122549472. Its totient is φ = 8125600000.

The previous prime is 20553530299. The next prime is 20553530351. The reversal of 20553530300 is 303535502.

It is a self number, because there is not a number n which added to its sum of digits gives 20553530300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7078649 + ... + 7081551.

It is an arithmetic number, because the mean of its divisors is an integer number (626702076).

Almost surely, 2^20553530300 is an apocalyptic number.

20553530300 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 20553530300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22561274736).

20553530300 is an abundant number, since it is smaller than the sum of its proper divisors (24569019172).

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

20553530300 is a wasteful number, since it uses less digits than its factorization.

20553530300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719 (or 3712 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 26.

The spelling of 20553530300 in words is "twenty billion, five hundred fifty-three million, five hundred thirty thousand, three hundred".