2085143934421 has 4 divisors (see below), whose sum is σ = 2085223616172. Its totient is φ = 2085064252672.

The previous prime is 2085143934359. The next prime is 2085143934451. The reversal of 2085143934421 is 1244393415802.

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 1997024011921 + 88119922500 = 1413161^2 + 296850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085143934421 - 2¹⁷ = 2085143803349 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 (2085143934451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39801610 + ... + 39853963.

It is an arithmetic number, because the mean of its divisors is an integer number (521305904043).

Almost surely, 2^{2085143934421} is an apocalyptic number.

It is an amenable number.

2085143934421 is a deficient number, since it is larger than the sum of its proper divisors (79681751).

2085143934421 is an equidigital number, since it uses as much as digits as its factorization.

2085143934421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79681750.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 2085143934421 in words is "two trillion, eighty-five billion, one hundred forty-three million, nine hundred thirty-four thousand, four hundred twenty-one".