11809800001 has 8 divisors (see below), whose sum is σ = 12061748160. Its totient is φ = 11560462992.

The previous prime is 11809799929. The next prime is 11809800031. The reversal of 11809800001 is 10000890811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11809800001 - 2⁷ = 11809799873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11809800031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643645 + ... + 661738.

It is an arithmetic number, because the mean of its divisors is an integer number (1507718520).

Almost surely, 2^11809800001 is an apocalyptic number.

It is an amenable number.

11809800001 is a deficient number, since it is larger than the sum of its proper divisors (251948159).

11809800001 is a wasteful number, since it uses less digits than its factorization.

11809800001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305575.

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 11809800001 in words is "eleven billion, eight hundred nine million, eight hundred thousand, one".