11955811804 has 6 divisors (see below), whose sum is σ = 20922670664. Its totient is φ = 5977905900.

The previous prime is 11955811771. The next prime is 11955811873. The reversal of 11955811804 is 40811855911.

It is a congruent number.

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, 1494476472 + ... + 1494476479.

Almost surely, 2^11955811804 is an apocalyptic number.

It is an amenable number.

11955811804 is a deficient number, since it is larger than the sum of its proper divisors (8966858860).

11955811804 is a wasteful number, since it uses less digits than its factorization.

11955811804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988952955 (or 2988952953 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 43.

The spelling of 11955811804 in words is "eleven billion, nine hundred fifty-five million, eight hundred eleven thousand, eight hundred four".