63440011 has 2 divisors, whose sum is σ = 63440012. Its totient is φ = 63440010.

The previous prime is 63440009. The next prime is 63440021. The reversal of 63440011 is 11004436.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63440011 - 2¹ = 63440009 is a prime.

Together with 63440009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63440021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31720005 + 31720006.

It is an arithmetic number, because the mean of its divisors is an integer number (31720006).

Almost surely, 2^63440011 is an apocalyptic number.

63440011 is a deficient number, since it is larger than the sum of its proper divisors (1).

63440011 is an equidigital number, since it uses as much as digits as its factorization.

63440011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 63440011 is about 7964.9237912236. The cubic root of 63440011 is about 398.8299369685.

Adding to 63440011 its reverse (11004436), we get a palindrome (74444447).

The spelling of 63440011 in words is "sixty-three million, four hundred forty thousand, eleven".