21064340714 has 16 divisors (see below), whose sum is σ = 32515122816. Its totient is φ = 10229388000.

The previous prime is 21064340711. The next prime is 21064340719. The reversal of 21064340714 is 41704346012.

It is not an unprimeable number, because it can be changed into a prime (21064340711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842987 + ... + 867614.

It is an arithmetic number, because the mean of its divisors is an integer number (2032195176).

Almost surely, 2^21064340714 is an apocalyptic number.

21064340714 is a deficient number, since it is larger than the sum of its proper divisors (11450782102).

21064340714 is a wasteful number, since it uses less digits than its factorization.

21064340714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710781.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 21064340714 its reverse (41704346012), we get a palindrome (62768686726).

The spelling of 21064340714 in words is "twenty-one billion, sixty-four million, three hundred forty thousand, seven hundred fourteen".