20701118240 has 96 divisors (see below), whose sum is σ = 53629744896. Its totient is φ = 7488552960.

The previous prime is 20701118231. The next prime is 20701118257. The reversal of 20701118240 is 4281110702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309209 + ... + 370151.

It is an arithmetic number, because the mean of its divisors is an integer number (558643176).

Almost surely, 2^20701118240 is an apocalyptic number.

20701118240 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 20701118240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26814872448).

20701118240 is an abundant number, since it is smaller than the sum of its proper divisors (32928626656).

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

20701118240 is a wasteful number, since it uses less digits than its factorization.

20701118240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61162 (or 61154 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 20701118240 its reverse (4281110702), we get a palindrome (24982228942).

The spelling of 20701118240 in words is "twenty billion, seven hundred one million, one hundred eighteen thousand, two hundred forty".