140405211344441 has 2 divisors, whose sum is σ = 140405211344442. Its totient is φ = 140405211344440.

The previous prime is 140405211344381. The next prime is 140405211344467. The reversal of 140405211344441 is 144443112504041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129477089440000 + 10928121904441 = 11378800^2 + 3305771^2 .

It is a cyclic number.

It is not a de Polignac number, because 140405211344441 - 2³⁴ = 140388031475257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140405211344395 and 140405211344404.

It is not a weakly prime, because it can be changed into another prime (140405211544441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70202605672220 + 70202605672221.

It is an arithmetic number, because the mean of its divisors is an integer number (70202605672221).

Almost surely, 2^{140405211344441} is an apocalyptic number.

It is an amenable number.

140405211344441 is a deficient number, since it is larger than the sum of its proper divisors (1).

140405211344441 is an equidigital number, since it uses as much as digits as its factorization.

140405211344441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 38.

Adding to 140405211344441 its reverse (144443112504041), we get a palindrome (284848323848482).

The spelling of 140405211344441 in words is "one hundred forty trillion, four hundred five billion, two hundred eleven million, three hundred forty-four thousand, four hundred forty-one".