11061980668405 has 32 divisors (see below), whose sum is σ = 14118107652864. Its totient is φ = 8302026011136.

The previous prime is 11061980668393. The next prime is 11061980668411. The reversal of 11061980668405 is 50486608916011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11061980668405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16163937 + ... + 16834393.

It is an arithmetic number, because the mean of its divisors is an integer number (441190864152).

Almost surely, 2^{11061980668405} is an apocalyptic number.

It is an amenable number.

11061980668405 is a deficient number, since it is larger than the sum of its proper divisors (3056126984459).

11061980668405 is a wasteful number, since it uses less digits than its factorization.

11061980668405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673245.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 11061980668405 in words is "eleven trillion, sixty-one billion, nine hundred eighty million, six hundred sixty-eight thousand, four hundred five".