20595259680 has 192 divisors, whose sum is σ = 67571013888. Its totient is φ = 5268049920.

The previous prime is 20595259667. The next prime is 20595259681. The reversal of 20595259680 is 8695259502.

It is not an unprimeable number, because it can be changed into a prime (20595259681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1252794 + ... + 1269126.

It is an arithmetic number, because the mean of its divisors is an integer number (351932364).

Almost surely, 2^20595259680 is an apocalyptic number.

20595259680 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 20595259680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33785506944).

20595259680 is an abundant number, since it is smaller than the sum of its proper divisors (46975754208).

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

20595259680 is a wasteful number, since it uses less digits than its factorization.

20595259680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16459 (or 16451 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 51.

The spelling of 20595259680 in words is "twenty billion, five hundred ninety-five million, two hundred fifty-nine thousand, six hundred eighty".