20864410080 has 96 divisors (see below), whose sum is σ = 69588971424. Its totient is φ = 5236555776.

The previous prime is 20864410057. The next prime is 20864410087. The reversal of 20864410080 is 8001446802.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20864410087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270297 + ... + 1286616.

It is an arithmetic number, because the mean of its divisors is an integer number (724885119).

Almost surely, 2^20864410080 is an apocalyptic number.

20864410080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20864410080 is an abundant number, since it is smaller than the sum of its proper divisors (48724561344).

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

20864410080 is a wasteful number, since it uses less digits than its factorization.

20864410080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556948 (or 2556940 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

Adding to 20864410080 its reverse (8001446802), we get a palindrome (28865856882).

The spelling of 20864410080 in words is "twenty billion, eight hundred sixty-four million, four hundred ten thousand, eighty".