20402143133 has 16 divisors (see below), whose sum is σ = 22548120000. Its totient is φ = 18383283072.

The previous prime is 20402143121. The next prime is 20402143199. The reversal of 20402143133 is 33134120402.

It is a cyclic number.

It is not a de Polignac number, because 20402143133 - 2³⁴ = 3222273949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20402143099 and 20402143108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402143103) 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, 239408 + ... + 313241.

It is an arithmetic number, because the mean of its divisors is an integer number (1409257500).

Almost surely, 2^20402143133 is an apocalyptic number.

It is an amenable number.

20402143133 is a deficient number, since it is larger than the sum of its proper divisors (2145976867).

20402143133 is a wasteful number, since it uses less digits than its factorization.

20402143133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552764.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20402143133 its reverse (33134120402), we get a palindrome (53536263535).

The spelling of 20402143133 in words is "twenty billion, four hundred two million, one hundred forty-three thousand, one hundred thirty-three".