400223504345551 has 2 divisors, whose sum is σ = 400223504345552. Its totient is φ = 400223504345550.

The previous prime is 400223504345477. The next prime is 400223504345573. The reversal of 400223504345551 is 155543405322004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400223504345551 - 2¹¹ = 400223504343503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400223504345498 and 400223504345507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400223504345591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200111752172775 + 200111752172776.

It is an arithmetic number, because the mean of its divisors is an integer number (200111752172776).

Almost surely, 2^{400223504345551} is an apocalyptic number.

400223504345551 is a deficient number, since it is larger than the sum of its proper divisors (1).

400223504345551 is an equidigital number, since it uses as much as digits as its factorization.

400223504345551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440000, while the sum is 43.

Adding to 400223504345551 its reverse (155543405322004), we get a palindrome (555766909667555).

The spelling of 400223504345551 in words is "four hundred trillion, two hundred twenty-three billion, five hundred four million, three hundred forty-five thousand, five hundred fifty-one".