40503145334221 has 2 divisors, whose sum is σ = 40503145334222. Its totient is φ = 40503145334220.

The previous prime is 40503145334191. The next prime is 40503145334227. The reversal of 40503145334221 is 12243354130504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40483633155625 + 19512178596 = 6362675^2 + 139686^2 .

It is a cyclic number.

It is not a de Polignac number, because 40503145334221 - 2²⁵ = 40503111779789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40503145334227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20251572667110 + 20251572667111.

It is an arithmetic number, because the mean of its divisors is an integer number (20251572667111).

Almost surely, 2^{40503145334221} is an apocalyptic number.

It is an amenable number.

40503145334221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40503145334221 is an equidigital number, since it uses as much as digits as its factorization.

40503145334221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 40503145334221 its reverse (12243354130504), we get a palindrome (52746499464725).

The spelling of 40503145334221 in words is "forty trillion, five hundred three billion, one hundred forty-five million, three hundred thirty-four thousand, two hundred twenty-one".