11404688161 has 16 divisors (see below), whose sum is σ = 12512770560. Its totient is φ = 10359961920.

The previous prime is 11404688147. The next prime is 11404688179. The reversal of 11404688161 is 16188640411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11404688161 - 2⁵ = 11404688129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11404688461) 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, 99465 + ... + 180838.

It is an arithmetic number, because the mean of its divisors is an integer number (782048160).

Almost surely, 2^11404688161 is an apocalyptic number.

It is an amenable number.

11404688161 is a deficient number, since it is larger than the sum of its proper divisors (1108082399).

11404688161 is a wasteful number, since it uses less digits than its factorization.

11404688161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280416.

The product of its (nonzero) digits is 36864, while the sum is 40.

The spelling of 11404688161 in words is "eleven billion, four hundred four million, six hundred eighty-eight thousand, one hundred sixty-one".