20520542322360 has 384 divisors, whose sum is σ = 68444058196800. Its totient is φ = 5330329804800.

The previous prime is 20520542322359. The next prime is 20520542322389. The reversal of 20520542322360 is 6322324502502.

20520542322360 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 0 + 5 + 423 + 223 + 6 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2087749926 + ... + 2087759754.

Almost surely, 2^{20520542322360} is an apocalyptic number.

20520542322360 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 20520542322360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34222029098400).

20520542322360 is an abundant number, since it is smaller than the sum of its proper divisors (47923515874440).

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

20520542322360 is a wasteful number, since it uses less digits than its factorization.

20520542322360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10871 (or 10864 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 20520542322360 its reverse (6322324502502), we get a palindrome (26842866824862).

The spelling of 20520542322360 in words is "twenty trillion, five hundred twenty billion, five hundred forty-two million, three hundred twenty-two thousand, three hundred sixty".