20195433580 has 96 divisors (see below), whose sum is σ = 48917385216. Its totient is φ = 6860384256.

The previous prime is 20195433553. The next prime is 20195433649. The reversal of 20195433580 is 8533459102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8251917 + ... + 8254363.

It is an arithmetic number, because the mean of its divisors is an integer number (509556096).

Almost surely, 2^20195433580 is an apocalyptic number.

20195433580 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 20195433580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24458692608).

20195433580 is an abundant number, since it is smaller than the sum of its proper divisors (28721951636).

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

20195433580 is a wasteful number, since it uses less digits than its factorization.

20195433580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 20195433580 in words is "twenty billion, one hundred ninety-five million, four hundred thirty-three thousand, five hundred eighty".