13061665841 has 12 divisors (see below), whose sum is σ = 15303501360. Its totient is φ = 11115163080.

The previous prime is 13061665831. The next prime is 13061665849. The reversal of 13061665841 is 14856616031.

It is a de Polignac number, because none of the positive numbers 2^k-13061665841 is a prime.

It is a super-2 number, since 2×13061665841² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13061665849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 952055 + ... + 965676.

It is an arithmetic number, because the mean of its divisors is an integer number (1275291780).

Almost surely, 2^13061665841 is an apocalyptic number.

It is an amenable number.

13061665841 is a deficient number, since it is larger than the sum of its proper divisors (2241835519).

13061665841 is a wasteful number, since it uses less digits than its factorization.

13061665841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917884 (or 1917877 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 13061665841 in words is "thirteen billion, sixty-one million, six hundred sixty-five thousand, eight hundred forty-one".