20142575984165 has 4 divisors (see below), whose sum is σ = 24171091181004. Its totient is φ = 16114060787328.

The previous prime is 20142575984051. The next prime is 20142575984171. The reversal of 20142575984165 is 56148957524102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8894339946244 + 11248236037921 = 2982338^2 + 3353839^2 .

It is a cyclic number.

It is not a de Polignac number, because 20142575984165 - 2¹² = 20142575980069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2014257598412 + ... + 2014257598421.

It is an arithmetic number, because the mean of its divisors is an integer number (6042772795251).

Almost surely, 2^{20142575984165} is an apocalyptic number.

It is an amenable number.

20142575984165 is a deficient number, since it is larger than the sum of its proper divisors (4028515196839).

20142575984165 is an equidigital number, since it uses as much as digits as its factorization.

20142575984165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028515196838.

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 20142575984165 in words is "twenty trillion, one hundred forty-two billion, five hundred seventy-five million, nine hundred eighty-four thousand, one hundred sixty-five".