11981835910 has 32 divisors (see below), whose sum is σ = 23552508672. Its totient is φ = 4352486880.

The previous prime is 11981835907. The next prime is 11981835919. The reversal of 11981835910 is 1953818911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11981835919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50049 + ... + 162691.

It is an arithmetic number, because the mean of its divisors is an integer number (736015896).

Almost surely, 2^11981835910 is an apocalyptic number.

11981835910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11981835910 is a deficient number, since it is larger than the sum of its proper divisors (11570672762).

11981835910 is a wasteful number, since it uses less digits than its factorization.

11981835910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113628.

The product of its (nonzero) digits is 77760, while the sum is 46.

The spelling of 11981835910 in words is "eleven billion, nine hundred eighty-one million, eight hundred thirty-five thousand, nine hundred ten".