20995583383005 has 128 divisors (see below), whose sum is σ = 43981431791616. Its totient is φ = 8292909081600.

The previous prime is 20995583383001. The next prime is 20995583383081. The reversal of 20995583383005 is 50038338559902.

It is not a de Polignac number, because 20995583383005 - 2² = 20995583383001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20995583383005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20995583383001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1653675 + ... + 6687735.

It is an arithmetic number, because the mean of its divisors is an integer number (343604935872).

Almost surely, 2^{20995583383005} is an apocalyptic number.

It is an amenable number.

20995583383005 is an abundant number, since it is smaller than the sum of its proper divisors (22985848408611).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20995583383005 is a wasteful number, since it uses less digits than its factorization.

20995583383005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034267.

The product of its (nonzero) digits is 34992000, while the sum is 60.

The spelling of 20995583383005 in words is "twenty trillion, nine hundred ninety-five billion, five hundred eighty-three million, three hundred eighty-three thousand, five".