11981862106 has 16 divisors (see below), whose sum is σ = 19033640064. Its totient is φ = 5637449664.

The previous prime is 11981862077. The next prime is 11981862143. The reversal of 11981862106 is 60126818911.

11981862106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164581 + ... + 225943.

It is an arithmetic number, because the mean of its divisors is an integer number (1189602504).

Almost surely, 2^11981862106 is an apocalyptic number.

11981862106 is a deficient number, since it is larger than the sum of its proper divisors (7051777958).

11981862106 is a wasteful number, since it uses less digits than its factorization.

11981862106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67125.

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 11981862106 in words is "eleven billion, nine hundred eighty-one million, eight hundred sixty-two thousand, one hundred six".