40182682217 has 4 divisors (see below), whose sum is σ = 40200300756. Its totient is φ = 40165063680.

The previous prime is 40182682187. The next prime is 40182682223. The reversal of 40182682217 is 71228628104.

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 29828398681 + 10354283536 = 172709^2 + 101756^2 .

It is a cyclic number.

It is not a de Polignac number, because 40182682217 - 2¹⁴ = 40182665833 is a prime.

It is a super-2 number, since 2×40182682217² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40182682237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8805848 + ... + 8810409.

It is an arithmetic number, because the mean of its divisors is an integer number (10050075189).

Almost surely, 2^40182682217 is an apocalyptic number.

It is an amenable number.

40182682217 is a deficient number, since it is larger than the sum of its proper divisors (17618539).

40182682217 is a wasteful number, since it uses less digits than its factorization.

40182682217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17618538.

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 40182682217 in words is "forty billion, one hundred eighty-two million, six hundred eighty-two thousand, two hundred seventeen".