20673354239 has 8 divisors (see below), whose sum is σ = 20750402400. Its totient is φ = 20596350816.

The previous prime is 20673354227. The next prime is 20673354253. The reversal of 20673354239 is 93245337602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20673354239 - 2⁴ = 20673354223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20673354239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673357239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126862 + ... + 1145060.

It is an arithmetic number, because the mean of its divisors is an integer number (2593800300).

Almost surely, 2^20673354239 is an apocalyptic number.

20673354239 is a deficient number, since it is larger than the sum of its proper divisors (77048161).

20673354239 is a wasteful number, since it uses less digits than its factorization.

20673354239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22369.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 20673354239 in words is "twenty billion, six hundred seventy-three million, three hundred fifty-four thousand, two hundred thirty-nine".