2104685107261 has 16 divisors (see below), whose sum is σ = 2309698368000. Its totient is φ = 1901959441200.

The previous prime is 2104685107237. The next prime is 2104685107271. The reversal of 2104685107261 is 1627015864012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104685107261 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 (2104685107271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5181640 + ... + 5573038.

It is an arithmetic number, because the mean of its divisors is an integer number (144356148000).

Almost surely, 2^{2104685107261} is an apocalyptic number.

It is an amenable number.

2104685107261 is a deficient number, since it is larger than the sum of its proper divisors (205013260739).

2104685107261 is a wasteful number, since it uses less digits than its factorization.

2104685107261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394320.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 2104685107261 in words is "two trillion, one hundred four billion, six hundred eighty-five million, one hundred seven thousand, two hundred sixty-one".