240220640633 has 2 divisors, whose sum is σ = 240220640634. Its totient is φ = 240220640632.

The previous prime is 240220640593. The next prime is 240220640659. The reversal of 240220640633 is 336046022042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157281248569 + 82939392064 = 396587^2 + 287992^2 .

It is a cyclic number.

It is not a de Polignac number, because 240220640633 - 2¹⁰ = 240220639609 is a prime.

It is a super-2 number, since 2×240220640633² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240220640633.

It is not a weakly prime, because it can be changed into another prime (240220640683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120110320316 + 120110320317.

It is an arithmetic number, because the mean of its divisors is an integer number (120110320317).

Almost surely, 2^240220640633 is an apocalyptic number.

It is an amenable number.

240220640633 is a deficient number, since it is larger than the sum of its proper divisors (1).

240220640633 is an equidigital number, since it uses as much as digits as its factorization.

240220640633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 240220640633 its reverse (336046022042), we get a palindrome (576266662675).

The spelling of 240220640633 in words is "two hundred forty billion, two hundred twenty million, six hundred forty thousand, six hundred thirty-three".