11395858009 has 4 divisors (see below), whose sum is σ = 11788818660. Its totient is φ = 11002897360.

The previous prime is 11395858003. The next prime is 11395858021. The reversal of 11395858009 is 90085859311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9576579600 + 1819278409 = 97860^2 + 42653^2 .

It is a cyclic number.

It is not a de Polignac number, because 11395858009 - 2⁷ = 11395857881 is a prime.

It is a super-2 number, since 2×11395858009² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11395858003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196480282 + ... + 196480339.

It is an arithmetic number, because the mean of its divisors is an integer number (2947204665).

Almost surely, 2^11395858009 is an apocalyptic number.

It is an amenable number.

11395858009 is a deficient number, since it is larger than the sum of its proper divisors (392960651).

11395858009 is an equidigital number, since it uses as much as digits as its factorization.

11395858009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392960650.

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 11395858009 in words is "eleven billion, three hundred ninety-five million, eight hundred fifty-eight thousand, nine".