11965856910 has 32 divisors (see below), whose sum is σ = 32820636672. Its totient is φ = 2735052960.

The previous prime is 11965856891. The next prime is 11965856911. The reversal of 11965856910 is 1965856911.

11965856910 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965856911) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28489926 + ... + 28490345.

It is an arithmetic number, because the mean of its divisors is an integer number (1025644896).

Almost surely, 2^11965856910 is an apocalyptic number.

11965856910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11965856910 is an abundant number, since it is smaller than the sum of its proper divisors (20854779762).

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

11965856910 is a wasteful number, since it uses less digits than its factorization.

11965856910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56980288.

The product of its (nonzero) digits is 583200, while the sum is 51.

Subtracting from 11965856910 its reverse (1965856911), we obtain a palindrome (9999999999).

The spelling of 11965856910 in words is "eleven billion, nine hundred sixty-five million, eight hundred fifty-six thousand, nine hundred ten".