11896180905 has 32 divisors (see below), whose sum is σ = 21897105408. Its totient is φ = 5402232000.

The previous prime is 11896180903. The next prime is 11896180909. The reversal of 11896180905 is 50908169811.

It is not a de Polignac number, because 11896180905 - 2¹ = 11896180903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11896180903) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 359301 + ... + 391010.

It is an arithmetic number, because the mean of its divisors is an integer number (684284544).

Almost surely, 2^11896180905 is an apocalyptic number.

11896180905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11896180905 is a deficient number, since it is larger than the sum of its proper divisors (10000924503).

11896180905 is a wasteful number, since it uses less digits than its factorization.

11896180905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750477.

The product of its (nonzero) digits is 155520, while the sum is 48.

The spelling of 11896180905 in words is "eleven billion, eight hundred ninety-six million, one hundred eighty thousand, nine hundred five".