2163442050521 has 8 divisors (see below), whose sum is σ = 2219232438024. Its totient is φ = 2107795639680.

The previous prime is 2163442050509. The next prime is 2163442050599. The reversal of 2163442050521 is 1250502443612.

It can be written as a sum of positive squares in 4 ways, for example, as 51619840000 + 2111822210521 = 227200^2 + 1453211^2 .

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 2163442050521 - 2⁶ = 2163442050457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163442059521) 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, 35963726 + ... + 36023831.

It is an arithmetic number, because the mean of its divisors is an integer number (277404054753).

Almost surely, 2^{2163442050521} is an apocalyptic number.

It is an amenable number.

2163442050521 is a deficient number, since it is larger than the sum of its proper divisors (55790387503).

2163442050521 is an equidigital number, since it uses as much as digits as its factorization.

2163442050521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71988331.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 2163442050521 in words is "two trillion, one hundred sixty-three billion, four hundred forty-two million, fifty thousand, five hundred twenty-one".