20443511420131 has 2 divisors, whose sum is σ = 20443511420132. Its totient is φ = 20443511420130.

The previous prime is 20443511420093. The next prime is 20443511420147. The reversal of 20443511420131 is 13102411534402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20443511420131 - 2¹⁷ = 20443511289059 is a prime.

It is a super-2 number, since 2×20443511420131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20443511420093 and 20443511420102.

It is not a weakly prime, because it can be changed into another prime (20443511420531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221755710065 + 10221755710066.

It is an arithmetic number, because the mean of its divisors is an integer number (10221755710066).

Almost surely, 2^{20443511420131} is an apocalyptic number.

20443511420131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443511420131 is an equidigital number, since it uses as much as digits as its factorization.

20443511420131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 20443511420131 its reverse (13102411534402), we get a palindrome (33545922954533).

The spelling of 20443511420131 in words is "twenty trillion, four hundred forty-three billion, five hundred eleven million, four hundred twenty thousand, one hundred thirty-one".