20580529691040 has 288 divisors, whose sum is σ = 72426133680768. Its totient is φ = 4907427993600.

The previous prime is 20580529691023. The next prime is 20580529691063. The reversal of 20580529691040 is 4019692508502.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638389 + ... + 6447371.

It is an arithmetic number, because the mean of its divisors is an integer number (251479630836).

Almost surely, 2^{20580529691040} is an apocalyptic number.

20580529691040 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 20580529691040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36213066840384).

20580529691040 is an abundant number, since it is smaller than the sum of its proper divisors (51845603989728).

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

20580529691040 is a wasteful number, since it uses less digits than its factorization.

20580529691040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809084 (or 5809065 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 20580529691040 in words is "twenty trillion, five hundred eighty billion, five hundred twenty-nine million, six hundred ninety-one thousand, forty".