11084720661 has 36 divisors (see below), whose sum is σ = 18636707232. Its totient is φ = 6330263184.

The previous prime is 11084720653. The next prime is 11084720693. The reversal of 11084720661 is 16602748011.

It is a happy number.

It is not a de Polignac number, because 11084720661 - 2³ = 11084720653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11084720611) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 816616 + ... + 830078.

It is an arithmetic number, because the mean of its divisors is an integer number (517686312).

Almost surely, 2^11084720661 is an apocalyptic number.

It is an amenable number.

11084720661 is a deficient number, since it is larger than the sum of its proper divisors (7551986571).

11084720661 is a wasteful number, since it uses less digits than its factorization.

11084720661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15350 (or 15340 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 11084720661 in words is "eleven billion, eighty-four million, seven hundred twenty thousand, six hundred sixty-one".