20553347360 has 144 divisors (see below), whose sum is σ = 60091730496. Its totient is φ = 6504735744.

The previous prime is 20553347357. The next prime is 20553347431. The reversal of 20553347360 is 6374335502.

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, 134987 + ... + 243573.

It is an arithmetic number, because the mean of its divisors is an integer number (417303684).

Almost surely, 2^20553347360 is an apocalyptic number.

20553347360 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 20553347360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30045865248).

20553347360 is an abundant number, since it is smaller than the sum of its proper divisors (39538383136).

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

20553347360 is a wasteful number, since it uses less digits than its factorization.

20553347360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108635 (or 108614 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 38.

The spelling of 20553347360 in words is "twenty billion, five hundred fifty-three million, three hundred forty-seven thousand, three hundred sixty".