20580023808 has 240 divisors, whose sum is σ = 62777450736. Its totient is φ = 6728417280.

The previous prime is 20580023803. The next prime is 20580023813. The reversal of 20580023808 is 80832008502.

It is an interprime number because it is at equal distance from previous prime (20580023803) and next prime (20580023813).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20580023803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6592488 + ... + 6595608.

Almost surely, 2^20580023808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20580023808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31388725368).

20580023808 is an abundant number, since it is smaller than the sum of its proper divisors (42197426928).

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

20580023808 is an frugal number, since it uses more digits than its factorization.

20580023808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3179 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 20580023808 in words is "twenty billion, five hundred eighty million, twenty-three thousand, eight hundred eight".