11809919876 has 6 divisors (see below), whose sum is σ = 20667359790. Its totient is φ = 5904959936.

The previous prime is 11809919827. The next prime is 11809919911. The reversal of 11809919876 is 67891990811.

It can be written as a sum of positive squares in only one way, i.e., 11674802500 + 135117376 = 108050^2 + 11624^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1476239981 + ... + 1476239988.

It is an arithmetic number, because the mean of its divisors is an integer number (3444559965).

Almost surely, 2^11809919876 is an apocalyptic number.

It is an amenable number.

11809919876 is a deficient number, since it is larger than the sum of its proper divisors (8857439914).

11809919876 is a wasteful number, since it uses less digits than its factorization.

11809919876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952479973 (or 2952479971 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 59.

The spelling of 11809919876 in words is "eleven billion, eight hundred nine million, nine hundred nineteen thousand, eight hundred seventy-six".