400100366243 has 2 divisors, whose sum is σ = 400100366244. Its totient is φ = 400100366242.

The previous prime is 400100366227. The next prime is 400100366333. The reversal of 400100366243 is 342663001004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400100366243 - 2⁴ = 400100366227 is a prime.

It is not a weakly prime, because it can be changed into another prime (400100366143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200050183121 + 200050183122.

It is an arithmetic number, because the mean of its divisors is an integer number (200050183122).

Almost surely, 2^400100366243 is an apocalyptic number.

400100366243 is a deficient number, since it is larger than the sum of its proper divisors (1).

400100366243 is an equidigital number, since it uses as much as digits as its factorization.

400100366243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 400100366243 its reverse (342663001004), we get a palindrome (742763367247).

The spelling of 400100366243 in words is "four hundred billion, one hundred million, three hundred sixty-six thousand, two hundred forty-three".