20340433143 has 12 divisors (see below), whose sum is σ = 29567765448. Its totient is φ = 13473916560.

The previous prime is 20340433081. The next prime is 20340433151. The reversal of 20340433143 is 34133404302.

20340433143 is a `hidden beast` number, since 2 + 0 + 340 + 4 + 3 + 314 + 3 = 666.

It is not a de Polignac number, because 20340433143 - 2¹⁷ = 20340302071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340433153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7196193 + ... + 7199018.

It is an arithmetic number, because the mean of its divisors is an integer number (2463980454).

Almost surely, 2^20340433143 is an apocalyptic number.

20340433143 is a deficient number, since it is larger than the sum of its proper divisors (9227332305).

20340433143 is a wasteful number, since it uses less digits than its factorization.

20340433143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14395374 (or 14395371 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20340433143 its reverse (34133404302), we get a palindrome (54473837445).

The spelling of 20340433143 in words is "twenty billion, three hundred forty million, four hundred thirty-three thousand, one hundred forty-three".