401154422221793 has 2 divisors, whose sum is σ = 401154422221794. Its totient is φ = 401154422221792.

The previous prime is 401154422221789. The next prime is 401154422221799. The reversal of 401154422221793 is 397122224451104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342321487732624 + 58832934489169 = 18501932^2 + 7670263^2 .

It is a cyclic number.

It is not a de Polignac number, because 401154422221793 - 2² = 401154422221789 is a prime.

It is not a weakly prime, because it can be changed into another prime (401154422221799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200577211110896 + 200577211110897.

It is an arithmetic number, because the mean of its divisors is an integer number (200577211110897).

Almost surely, 2^{401154422221793} is an apocalyptic number.

It is an amenable number.

401154422221793 is a deficient number, since it is larger than the sum of its proper divisors (1).

401154422221793 is an equidigital number, since it uses as much as digits as its factorization.

401154422221793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 47.

Adding to 401154422221793 its reverse (397122224451104), we get a palindrome (798276646672897).

The spelling of 401154422221793 in words is "four hundred one trillion, one hundred fifty-four billion, four hundred twenty-two million, two hundred twenty-one thousand, seven hundred ninety-three".