400422993562993 has 2 divisors, whose sum is σ = 400422993562994. Its totient is φ = 400422993562992.

The previous prime is 400422993562987. The next prime is 400422993563011. The reversal of 400422993562993 is 399265399224004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396574087132224 + 3848906430769 = 19914168^2 + 1961863^2 .

It is a cyclic number.

It is not a de Polignac number, because 400422993562993 - 2²¹ = 400422991465841 is a prime.

It is not a weakly prime, because it can be changed into another prime (400422993562903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200211496781496 + 200211496781497.

It is an arithmetic number, because the mean of its divisors is an integer number (200211496781497).

Almost surely, 2^{400422993562993} is an apocalyptic number.

It is an amenable number.

400422993562993 is a deficient number, since it is larger than the sum of its proper divisors (1).

400422993562993 is an equidigital number, since it uses as much as digits as its factorization.

400422993562993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226748160, while the sum is 67.

The spelling of 400422993562993 in words is "four hundred trillion, four hundred twenty-two billion, nine hundred ninety-three million, five hundred sixty-two thousand, nine hundred ninety-three".