20355068160 has 216 divisors, whose sum is σ = 80487650880. Its totient is φ = 4652568576.

The previous prime is 20355068147. The next prime is 20355068161. The reversal of 20355068160 is 6186055302.

20355068160 is a `hidden beast` number, since 20 + 3 + 550 + 6 + 81 + 6 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20355068161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45570 + ... + 206849.

Almost surely, 2^20355068160 is an apocalyptic number.

20355068160 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 20355068160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40243825440).

20355068160 is an abundant number, since it is smaller than the sum of its proper divisors (60132582720).

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

20355068160 is a wasteful number, since it uses less digits than its factorization.

20355068160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252453 (or 252436 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 20355068160 in words is "twenty billion, three hundred fifty-five million, sixty-eight thousand, one hundred sixty".