64663403111 has 4 divisors (see below), whose sum is σ = 64671938112. Its totient is φ = 64654868112.

The previous prime is 64663403083. The next prime is 64663403117. The reversal of 64663403111 is 11130436646.

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

It is a cyclic number.

It is not a de Polignac number, because 64663403111 - 2³⁴ = 47483533927 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 (64663403117) 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, 4256126 + ... + 4271291.

It is an arithmetic number, because the mean of its divisors is an integer number (16167984528).

Almost surely, 2^64663403111 is an apocalyptic number.

64663403111 is a deficient number, since it is larger than the sum of its proper divisors (8535001).

64663403111 is an equidigital number, since it uses as much as digits as its factorization.

64663403111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8535000.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 64663403111 its reverse (11130436646), we get a palindrome (75793839757).

The spelling of 64663403111 in words is "sixty-four billion, six hundred sixty-three million, four hundred three thousand, one hundred eleven".