400254310022473 has 2 divisors, whose sum is σ = 400254310022474. Its totient is φ = 400254310022472.

The previous prime is 400254310022353. The next prime is 400254310022477. The reversal of 400254310022473 is 374220013452004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318726466879744 + 81527843142729 = 17852912^2 + 9029277^2 .

It is a cyclic number.

It is not a de Polignac number, because 400254310022473 - 2²⁵ = 400254276468041 is a prime.

It is not a weakly prime, because it can be changed into another prime (400254310022477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200127155011236 + 200127155011237.

It is an arithmetic number, because the mean of its divisors is an integer number (200127155011237).

Almost surely, 2^{400254310022473} is an apocalyptic number.

It is an amenable number.

400254310022473 is a deficient number, since it is larger than the sum of its proper divisors (1).

400254310022473 is an equidigital number, since it uses as much as digits as its factorization.

400254310022473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 37.

Adding to 400254310022473 its reverse (374220013452004), we get a palindrome (774474323474477).

The spelling of 400254310022473 in words is "four hundred trillion, two hundred fifty-four billion, three hundred ten million, twenty-two thousand, four hundred seventy-three".