40224342161 has 2 divisors, whose sum is σ = 40224342162. Its totient is φ = 40224342160.

The previous prime is 40224342127. The next prime is 40224342163. The reversal of 40224342161 is 16124342204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40224313600 + 28561 = 200560^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 40224342161 - 2¹⁴ = 40224325777 is a prime.

Together with 40224342163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40224342163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20112171080 + 20112171081.

It is an arithmetic number, because the mean of its divisors is an integer number (20112171081).

Almost surely, 2^40224342161 is an apocalyptic number.

It is an amenable number.

40224342161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40224342161 is an equidigital number, since it uses as much as digits as its factorization.

40224342161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 40224342161 its reverse (16124342204), we get a palindrome (56348684365).

The spelling of 40224342161 in words is "forty billion, two hundred twenty-four million, three hundred forty-two thousand, one hundred sixty-one".