2099685042841 has 9 divisors (see below), whose sum is σ = 2230487441949. Its totient is φ = 1976150973504.

The previous prime is 2099685042839. The next prime is 2099685042853. The reversal of 2099685042841 is 1482405869902.

It is a happy number.

The square root of 2099685042841 is 1449029.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 452620818441 + 1647064224400 = 672771^2 + 1283380^2 .

It is not a de Polignac number, because 2099685042841 - 2¹ = 2099685042839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099685042941) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24590875 + ... + 24676111.

Almost surely, 2^{2099685042841} is an apocalyptic number.

2099685042841 is the 1449029-th square number.

2099685042841 is the 724515-th centered octagonal number.

It is an amenable number.

2099685042841 is a deficient number, since it is larger than the sum of its proper divisors (130802399108).

2099685042841 is an frugal number, since it uses more digits than its factorization.

2099685042841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170508 (or 85254 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 2099685042841 in words is "two trillion, ninety-nine billion, six hundred eighty-five million, forty-two thousand, eight hundred forty-one".