20302404143 has 16 divisors (see below), whose sum is σ = 23314695936. Its totient is φ = 17318283840.

The previous prime is 20302404131. The next prime is 20302404167. The reversal of 20302404143 is 34140420302.

It is a cyclic number.

It is not a de Polignac number, because 20302404143 - 2¹⁶ = 20302338607 is a prime.

It is a super-2 number, since 2×20302404143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302404113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401608 + ... + 1416018.

It is an arithmetic number, because the mean of its divisors is an integer number (1457168496).

Almost surely, 2^20302404143 is an apocalyptic number.

20302404143 is a deficient number, since it is larger than the sum of its proper divisors (3012291793).

20302404143 is a wasteful number, since it uses less digits than its factorization.

20302404143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15374.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20302404143 its reverse (34140420302), we get a palindrome (54442824445).

The spelling of 20302404143 in words is "twenty billion, three hundred two million, four hundred four thousand, one hundred forty-three".