11911883976 has 40 divisors (see below), whose sum is σ = 33364306470. Its totient is φ = 3970627776.

The previous prime is 11911883947. The next prime is 11911883983. The reversal of 11911883976 is 67938811911.

It can be written as a sum of positive squares in only one way, i.e., 10686183876 + 1225700100 = 103374^2 + 35010^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9190621 + ... + 9191916.

Almost surely, 2^11911883976 is an apocalyptic number.

It is an amenable number.

11911883976 is an abundant number, since it is smaller than the sum of its proper divisors (21452422494).

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

11911883976 is a wasteful number, since it uses less digits than its factorization.

11911883976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18382555 (or 18382542 counting only the distinct ones).

The product of its digits is 653184, while the sum is 54.

The spelling of 11911883976 in words is "eleven billion, nine hundred eleven million, eight hundred eighty-three thousand, nine hundred seventy-six".