20001231360 has 240 divisors, whose sum is σ = 75568109760. Its totient is φ = 4848721920.

The previous prime is 20001231343. The next prime is 20001231361. The reversal of 20001231360 is 6313210002.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20001231361) 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, 213981 + ... + 292899.

It is an arithmetic number, because the mean of its divisors is an integer number (314867124).

Almost surely, 2^20001231360 is an apocalyptic number.

20001231360 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 20001231360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37784054880).

20001231360 is an abundant number, since it is smaller than the sum of its proper divisors (55566878400).

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

20001231360 is a wasteful number, since it uses less digits than its factorization.

20001231360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78959 (or 78940 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20001231360 its reverse (6313210002), we get a palindrome (26314441362).

The spelling of 20001231360 in words is "twenty billion, one million, two hundred thirty-one thousand, three hundred sixty".