20541530580 has 96 divisors (see below), whose sum is σ = 57950121600. Its totient is φ = 5436523008.

The previous prime is 20541530579. The next prime is 20541530701. The reversal of 20541530580 is 8503514502.

It is a super-3 number, since 3×20541530580³ (a number of 32 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 12018766 + ... + 12020474.

It is an arithmetic number, because the mean of its divisors is an integer number (603647100).

Almost surely, 2^20541530580 is an apocalyptic number.

20541530580 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 20541530580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28975060800).

20541530580 is an abundant number, since it is smaller than the sum of its proper divisors (37408591020).

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

20541530580 is a wasteful number, since it uses less digits than its factorization.

20541530580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 20541530580 in words is "twenty billion, five hundred forty-one million, five hundred thirty thousand, five hundred eighty".