400243041433 has 2 divisors, whose sum is σ = 400243041434. Its totient is φ = 400243041432.

The previous prime is 400243041409. The next prime is 400243041437. The reversal of 400243041433 is 334140342004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361618214409 + 38624827024 = 601347^2 + 196532^2 .

It is a cyclic number.

It is not a de Polignac number, because 400243041433 - 2⁹ = 400243040921 is a prime.

It is not a weakly prime, because it can be changed into another prime (400243041437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200121520716 + 200121520717.

It is an arithmetic number, because the mean of its divisors is an integer number (200121520717).

Almost surely, 2^400243041433 is an apocalyptic number.

It is an amenable number.

400243041433 is a deficient number, since it is larger than the sum of its proper divisors (1).

400243041433 is an equidigital number, since it uses as much as digits as its factorization.

400243041433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 400243041433 its reverse (334140342004), we get a palindrome (734383383437).

The spelling of 400243041433 in words is "four hundred billion, two hundred forty-three million, forty-one thousand, four hundred thirty-three".