2801840961105 has 24 divisors (see below), whose sum is σ = 4856659353000. Its totient is φ = 1494273634560.

The previous prime is 2801840961061. The next prime is 2801840961107. The reversal of 2801840961105 is 5011690481082.

It is a happy number.

2801840961105 is a `hidden beast` number, since 2 + 80 + 1 + 8 + 409 + 61 + 105 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21828289536 + 2780012671569 = 147744^2 + 1667337^2 .

It is not a de Polignac number, because 2801840961105 - 2⁹ = 2801840960593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2801840961107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 806565 + ... + 2500845.

It is an arithmetic number, because the mean of its divisors is an integer number (202360806375).

Almost surely, 2^{2801840961105} is an apocalyptic number.

It is an amenable number.

2801840961105 is a deficient number, since it is larger than the sum of its proper divisors (2054818391895).

2801840961105 is a wasteful number, since it uses less digits than its factorization.

2801840961105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731041 (or 1731038 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 2801840961105 in words is "two trillion, eight hundred one billion, eight hundred forty million, nine hundred sixty-one thousand, one hundred five".