20432243318 has 32 divisors (see below), whose sum is σ = 31650387552. Its totient is φ = 9886406400.

The previous prime is 20432243317. The next prime is 20432243323. The reversal of 20432243318 is 81334223402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432243311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8726828 + ... + 8729168.

It is an arithmetic number, because the mean of its divisors is an integer number (989074611).

Almost surely, 2^20432243318 is an apocalyptic number.

20432243318 is a deficient number, since it is larger than the sum of its proper divisors (11218144234).

20432243318 is a wasteful number, since it uses less digits than its factorization.

20432243318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 20432243318 in words is "twenty billion, four hundred thirty-two million, two hundred forty-three thousand, three hundred eighteen".