20340024646 has 16 divisors (see below), whose sum is σ = 32348499120. Its totient is φ = 9558812160.

The previous prime is 20340024613. The next prime is 20340024673. The reversal of 20340024646 is 64642004302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379635 + ... + 429886.

It is an arithmetic number, because the mean of its divisors is an integer number (2021781195).

Almost surely, 2^20340024646 is an apocalyptic number.

20340024646 is a deficient number, since it is larger than the sum of its proper divisors (12008474474).

20340024646 is a wasteful number, since it uses less digits than its factorization.

20340024646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810279.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 20340024646 its reverse (64642004302), we get a palindrome (84982028948).

The spelling of 20340024646 in words is "twenty billion, three hundred forty million, twenty-four thousand, six hundred forty-six".