11810909959 has 8 divisors (see below), whose sum is σ = 11848945680. Its totient is φ = 11772936000.

The previous prime is 11810909939. The next prime is 11810909969. The reversal of 11810909959 is 95990901811.

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 11810909959 - 2⁵ = 11810909927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11810909939) 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, 384064 + ... + 413674.

It is an arithmetic number, because the mean of its divisors is an integer number (1481118210).

Almost surely, 2^11810909959 is an apocalyptic number.

11810909959 is a deficient number, since it is larger than the sum of its proper divisors (38035721).

11810909959 is an equidigital number, since it uses as much as digits as its factorization.

11810909959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30881.

The product of its (nonzero) digits is 262440, while the sum is 52.

The spelling of 11810909959 in words is "eleven billion, eight hundred ten million, nine hundred nine thousand, nine hundred fifty-nine".