20339440591 has 8 divisors (see below), whose sum is σ = 20598990464. Its totient is φ = 20081084760.

The previous prime is 20339440571. The next prime is 20339440603. The reversal of 20339440591 is 19504493302.

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 20339440591 - 2¹⁷ = 20339309519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20339440571) 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, 264201 + ... + 332386.

It is an arithmetic number, because the mean of its divisors is an integer number (2574873808).

Almost surely, 2^20339440591 is an apocalyptic number.

20339440591 is a deficient number, since it is larger than the sum of its proper divisors (259549873).

20339440591 is a wasteful number, since it uses less digits than its factorization.

20339440591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597021.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 20339440591 in words is "twenty billion, three hundred thirty-nine million, four hundred forty thousand, five hundred ninety-one".