20383965583 has 8 divisors (see below), whose sum is σ = 21584527920. Its totient is φ = 19183570560.

The previous prime is 20383965571. The next prime is 20383965619. The reversal of 20383965583 is 38556938302.

It is a happy number.

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 20383965583 - 2⁵ = 20383965551 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 20383965583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20383965983) 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, 279673 + ... + 344941.

It is an arithmetic number, because the mean of its divisors is an integer number (2698065990).

Almost surely, 2^20383965583 is an apocalyptic number.

20383965583 is a deficient number, since it is larger than the sum of its proper divisors (1200562337).

20383965583 is a wasteful number, since it uses less digits than its factorization.

20383965583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83657.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 20383965583 in words is "twenty billion, three hundred eighty-three million, nine hundred sixty-five thousand, five hundred eighty-three".