11801123844 has 12 divisors (see below), whose sum is σ = 27535955664. Its totient is φ = 3933707944.

The previous prime is 11801123821. The next prime is 11801123861. The reversal of 11801123844 is 44832110811.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491713482 + ... + 491713505.

It is an arithmetic number, because the mean of its divisors is an integer number (2294662972).

Almost surely, 2^11801123844 is an apocalyptic number.

It is an amenable number.

11801123844 is an abundant number, since it is smaller than the sum of its proper divisors (15734831820).

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

11801123844 is a wasteful number, since it uses less digits than its factorization.

11801123844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983426994 (or 983426992 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 11801123844 in words is "eleven billion, eight hundred one million, one hundred twenty-three thousand, eight hundred forty-four".