20001441540 has 24 divisors (see below), whose sum is σ = 56004036480. Its totient is φ = 5333717728.

The previous prime is 20001441503. The next prime is 20001441547. The reversal of 20001441540 is 4514410002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20001441547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166678620 + ... + 166678739.

It is an arithmetic number, because the mean of its divisors is an integer number (2333501520).

Almost surely, 2^20001441540 is an apocalyptic number.

20001441540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001441540 is an abundant number, since it is smaller than the sum of its proper divisors (36002594940).

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

20001441540 is a wasteful number, since it uses less digits than its factorization.

20001441540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333357371 (or 333357369 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 20001441540 its reverse (4514410002), we get a palindrome (24515851542).

The spelling of 20001441540 in words is "twenty billion, one million, four hundred forty-one thousand, five hundred forty".