11873811081 has 16 divisors (see below), whose sum is σ = 17737783488. Its totient is φ = 7001755200.

The previous prime is 11873811073. The next prime is 11873811091. The reversal of 11873811081 is 18011837811.

It is not a de Polignac number, because 11873811081 - 2³ = 11873811073 is a prime.

It is a super-3 number, since 3×11873811081³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11873811091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4861110 + ... + 4863551.

It is an arithmetic number, because the mean of its divisors is an integer number (1108611468).

Almost surely, 2^11873811081 is an apocalyptic number.

11873811081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11873811081 is a deficient number, since it is larger than the sum of its proper divisors (5863972407).

11873811081 is a wasteful number, since it uses less digits than its factorization.

11873811081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9724712.

The product of its (nonzero) digits is 10752, while the sum is 39.

The spelling of 11873811081 in words is "eleven billion, eight hundred seventy-three million, eight hundred eleven thousand, eighty-one".