20402043141131 has 4 divisors (see below), whose sum is σ = 20466402898992. Its totient is φ = 20337683383272.

The previous prime is 20402043140989. The next prime is 20402043141197. The reversal of 20402043141131 is 13114134020402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20402043141131 - 2¹⁰ = 20402043140107 is a prime.

It is a super-2 number, since 2×20402043141131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20402043141131.

It is not an unprimeable number, because it can be changed into a prime (20402043141631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32179878455 + ... + 32179879088.

It is an arithmetic number, because the mean of its divisors is an integer number (5116600724748).

Almost surely, 2^{20402043141131} is an apocalyptic number.

20402043141131 is a deficient number, since it is larger than the sum of its proper divisors (64359757861).

20402043141131 is an equidigital number, since it uses as much as digits as its factorization.

20402043141131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64359757860.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20402043141131 its reverse (13114134020402), we get a palindrome (33516177161533).

The spelling of 20402043141131 in words is "twenty trillion, four hundred two billion, forty-three million, one hundred forty-one thousand, one hundred thirty-one".