20567356320 has 192 divisors, whose sum is σ = 74609289216. Its totient is φ = 4665123840.

The previous prime is 20567356319. The next prime is 20567356321. The reversal of 20567356320 is 2365376502.

It is an interprime number because it is at equal distance from previous prime (20567356319) and next prime (20567356321).

It is a super-2 number, since 2×20567356320² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20567356321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 416797 + ... + 463523.

It is an arithmetic number, because the mean of its divisors is an integer number (388590048).

Almost surely, 2^20567356320 is an apocalyptic number.

20567356320 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 20567356320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37304644608).

20567356320 is an abundant number, since it is smaller than the sum of its proper divisors (54041932896).

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

20567356320 is a wasteful number, since it uses less digits than its factorization.

20567356320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46883 (or 46875 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 39.

The spelling of 20567356320 in words is "twenty billion, five hundred sixty-seven million, three hundred fifty-six thousand, three hundred twenty".