20020115143 has 16 divisors (see below), whose sum is σ = 23036880384. Its totient is φ = 17042715360.

The previous prime is 20020115119. The next prime is 20020115183. The reversal of 20020115143 is 34151102002.

It is a cyclic number.

It is not a de Polignac number, because 20020115143 - 2¹⁷ = 20019984071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020115143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020115183) 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, 1486108 + ... + 1499518.

It is an arithmetic number, because the mean of its divisors is an integer number (1439805024).

Almost surely, 2^20020115143 is an apocalyptic number.

20020115143 is a deficient number, since it is larger than the sum of its proper divisors (3016765241).

20020115143 is a wasteful number, since it uses less digits than its factorization.

20020115143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14862.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20020115143 its reverse (34151102002), we get a palindrome (54171217145).

The spelling of 20020115143 in words is "twenty billion, twenty million, one hundred fifteen thousand, one hundred forty-three".