40514217221 has 4 divisors (see below), whose sum is σ = 41069206572. Its totient is φ = 39959227872.

The previous prime is 40514217209. The next prime is 40514217259. The reversal of 40514217221 is 12271241504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29544796996 + 10969420225 = 171886^2 + 104735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40514217221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40514210221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277494566 + ... + 277494711.

It is an arithmetic number, because the mean of its divisors is an integer number (10267301643).

Almost surely, 2^40514217221 is an apocalyptic number.

It is an amenable number.

40514217221 is a deficient number, since it is larger than the sum of its proper divisors (554989351).

40514217221 is an equidigital number, since it uses as much as digits as its factorization.

40514217221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554989350.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 40514217221 its reverse (12271241504), we get a palindrome (52785458725).

The spelling of 40514217221 in words is "forty billion, five hundred fourteen million, two hundred seventeen thousand, two hundred twenty-one".