20805473383 has 8 divisors (see below), whose sum is σ = 20937945600. Its totient is φ = 20673060408.

The previous prime is 20805473371. The next prime is 20805473387. The reversal of 20805473383 is 38337450802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20805473383 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 (20805473387) 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, 848388 + ... + 872566.

It is an arithmetic number, because the mean of its divisors is an integer number (2617243200).

Almost surely, 2^20805473383 is an apocalyptic number.

20805473383 is a deficient number, since it is larger than the sum of its proper divisors (132472217).

20805473383 is a wasteful number, since it uses less digits than its factorization.

20805473383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29621.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 20805473383 in words is "twenty billion, eight hundred five million, four hundred seventy-three thousand, three hundred eighty-three".