11690122418 has 18 divisors (see below), whose sum is σ = 18991031607. Its totient is φ = 5394523680.

The previous prime is 11690122387. The next prime is 11690122427. The reversal of 11690122418 is 81422109611.

It can be written as a sum of positive squares in 5 ways, for example, as 5546227729 + 6143894689 = 74473^2 + 78383^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=76453.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1984838 + ... + 1990718.

Almost surely, 2^11690122418 is an apocalyptic number.

11690122418 is a deficient number, since it is larger than the sum of its proper divisors (7300909189).

11690122418 is an frugal number, since it uses more digits than its factorization.

11690122418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11790 (or 5896 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 11690122418 in words is "eleven billion, six hundred ninety million, one hundred twenty-two thousand, four hundred eighteen".