20363430064 has 20 divisors (see below), whose sum is σ = 40043015704. Its totient is φ = 10029748608.

The previous prime is 20363430049. The next prime is 20363430067. The reversal of 20363430064 is 46003436302.

It is not an unprimeable number, because it can be changed into a prime (20363430067) 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, 9496797 + ... + 9498940.

Almost surely, 2^20363430064 is an apocalyptic number.

It is an amenable number.

20363430064 is a deficient number, since it is larger than the sum of its proper divisors (19679585640).

20363430064 is a wasteful number, since it uses less digits than its factorization.

20363430064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18995812 (or 18995806 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 20363430064 its reverse (46003436302), we get a palindrome (66366866366).

The spelling of 20363430064 in words is "twenty billion, three hundred sixty-three million, four hundred thirty thousand, sixty-four".