20008580000 has 60 divisors (see below), whose sum is σ = 49224157290. Its totient is φ = 8003424000.

The previous prime is 20008579993. The next prime is 20008580023. The reversal of 20008580000 is 8580002.

It can be written as a sum of positive squares in 5 ways, for example, as 3026320144 + 16982259856 = 55012^2 + 130316^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 480215 + ... + 520214.

Almost surely, 2^20008580000 is an apocalyptic number.

20008580000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20008580000 is an abundant number, since it is smaller than the sum of its proper divisors (29215577290).

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

20008580000 is an equidigital number, since it uses as much as digits as its factorization.

20008580000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000459 (or 1000436 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The spelling of 20008580000 in words is "twenty billion, eight million, five hundred eighty thousand".