20320606354320 has 320 divisors, whose sum is σ = 70700854855680. Its totient is φ = 5364064512000.

The previous prime is 20320606354259. The next prime is 20320606354331. The reversal of 20320606354320 is 2345360602302.

20320606354320 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 0 + 606 + 3 + 5 + 43 + 2 + 0 = 666.

It is a super-2 number, since 2×20320606354320² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2055280417 + ... + 2055290303.

It is an arithmetic number, because the mean of its divisors is an integer number (220940171424).

Almost surely, 2^{20320606354320} is an apocalyptic number.

20320606354320 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 20320606354320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35350427427840).

20320606354320 is an abundant number, since it is smaller than the sum of its proper divisors (50380248501360).

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

20320606354320 is a wasteful number, since it uses less digits than its factorization.

20320606354320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431 (or 19419 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 20320606354320 its reverse (2345360602302), we get a palindrome (22665966956622).

The spelling of 20320606354320 in words is "twenty trillion, three hundred twenty billion, six hundred six million, three hundred fifty-four thousand, three hundred twenty".