11865335808 has 96 divisors (see below), whose sum is σ = 32654119680. Its totient is φ = 3827466240.

The previous prime is 11865335767. The next prime is 11865335813. The reversal of 11865335808 is 80853356811.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159316 + ... + 221612.

It is an arithmetic number, because the mean of its divisors is an integer number (340147080).

Almost surely, 2^11865335808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11865335808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16327059840).

11865335808 is an abundant number, since it is smaller than the sum of its proper divisors (20788783872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11865335808 is an equidigital number, since it uses as much as digits as its factorization.

11865335808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62353 (or 62333 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 11865335808 in words is "eleven billion, eight hundred sixty-five million, three hundred thirty-five thousand, eight hundred eight".