20402144341 has 2 divisors, whose sum is σ = 20402144342. Its totient is φ = 20402144340.

The previous prime is 20402144327. The next prime is 20402144377. The reversal of 20402144341 is 14344120402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15661271025 + 4740873316 = 125145^2 + 68854^2 .

It is a cyclic number.

It is not a de Polignac number, because 20402144341 - 2⁵ = 20402144309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20402141341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201072170 + 10201072171.

It is an arithmetic number, because the mean of its divisors is an integer number (10201072171).

Almost surely, 2^20402144341 is an apocalyptic number.

It is an amenable number.

20402144341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402144341 is an equidigital number, since it uses as much as digits as its factorization.

20402144341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20402144341 its reverse (14344120402), we get a palindrome (34746264743).

The spelling of 20402144341 in words is "twenty billion, four hundred two million, one hundred forty-four thousand, three hundred forty-one".