11980235838 has 8 divisors (see below), whose sum is σ = 23960471688. Its totient is φ = 3993411944.

The previous prime is 11980235821. The next prime is 11980235857. The reversal of 11980235838 is 83853208911.

11980235838 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

11980235838 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 998352981 + ... + 998352992.

It is an arithmetic number, because the mean of its divisors is an integer number (2995058961).

Almost surely, 2^11980235838 is an apocalyptic number.

11980235838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11980235838 is a wasteful number, since it uses less digits than its factorization.

11980235838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996705978.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 11980235838 in words is "eleven billion, nine hundred eighty million, two hundred thirty-five thousand, eight hundred thirty-eight".