20578001120 has 72 divisors (see below), whose sum is σ = 49454824104. Its totient is φ = 8091469568.

The previous prime is 20578001089. The next prime is 20578001189. The reversal of 20578001120 is 2110087502.

It is a self number, because there is not a number n which added to its sum of digits gives 20578001120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538487 + ... + 575433.

It is an arithmetic number, because the mean of its divisors is an integer number (686872557).

Almost surely, 2^20578001120 is an apocalyptic number.

20578001120 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 20578001120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24727412052).

20578001120 is an abundant number, since it is smaller than the sum of its proper divisors (28876822984).

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

20578001120 is an equidigital number, since it uses as much as digits as its factorization.

20578001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37080 (or 37013 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 20578001120 its reverse (2110087502), we get a palindrome (22688088622).

The spelling of 20578001120 in words is "twenty billion, five hundred seventy-eight million, one thousand, one hundred twenty".