20001241143 has 40 divisors (see below), whose sum is σ = 32191868016. Its totient is φ = 12302668800.

The previous prime is 20001241097. The next prime is 20001241151. The reversal of 20001241143 is 34114210002.

20001241143 is a `hidden beast` number, since 200 + 0 + 12 + 411 + 43 = 666.

It is not a de Polignac number, because 20001241143 - 2⁶ = 20001241079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001241243) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3673303 + ... + 3678743.

Almost surely, 2^20001241143 is an apocalyptic number.

20001241143 is a deficient number, since it is larger than the sum of its proper divisors (12190626873).

20001241143 is a wasteful number, since it uses less digits than its factorization.

20001241143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957 (or 8948 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20001241143 its reverse (34114210002), we get a palindrome (54115451145).

The spelling of 20001241143 in words is "twenty billion, one million, two hundred forty-one thousand, one hundred forty-three".