11812679617 has 16 divisors (see below), whose sum is σ = 12449852352. Its totient is φ = 11196852480.

The previous prime is 11812679581. The next prime is 11812679633. The reversal of 11812679617 is 71697621811.

It is a cyclic number.

It is not a de Polignac number, because 11812679617 - 2²⁷ = 11678461889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11812679657) 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, 171078 + ... + 229984.

It is an arithmetic number, because the mean of its divisors is an integer number (778115772).

Almost surely, 2^11812679617 is an apocalyptic number.

It is an amenable number.

11812679617 is a deficient number, since it is larger than the sum of its proper divisors (637172735).

11812679617 is an equidigital number, since it uses as much as digits as its factorization.

11812679617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59088.

The product of its digits is 254016, while the sum is 49.

The spelling of 11812679617 in words is "eleven billion, eight hundred twelve million, six hundred seventy-nine thousand, six hundred seventeen".