20303402580 has 36 divisors (see below), whose sum is σ = 61586988372. Its totient is φ = 5414240640.

The previous prime is 20303402573. The next prime is 20303402597. The reversal of 20303402580 is 8520430302.

20303402580 is a `hidden beast` number, since 20 + 30 + 34 + 0 + 2 + 580 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7583623056 + 12719779524 = 87084^2 + 112782^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 56398161 + ... + 56398520.

It is an arithmetic number, because the mean of its divisors is an integer number (1710749677).

Almost surely, 2^20303402580 is an apocalyptic number.

20303402580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303402580 is an abundant number, since it is smaller than the sum of its proper divisors (41283585792).

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

20303402580 is a wasteful number, since it uses less digits than its factorization.

20303402580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112796696 (or 112796691 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20303402580 its reverse (8520430302), we get a palindrome (28823832882).

The spelling of 20303402580 in words is "twenty billion, three hundred three million, four hundred two thousand, five hundred eighty".