11979317835 has 48 divisors (see below), whose sum is σ = 22063657824. Its totient is φ = 5991791616.

The previous prime is 11979317797. The next prime is 11979317837. The reversal of 11979317835 is 53871397911.

It is not a de Polignac number, because 11979317835 - 2⁹ = 11979317323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11979317837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188829 + ... + 244161.

It is an arithmetic number, because the mean of its divisors is an integer number (459659538).

Almost surely, 2^11979317835 is an apocalyptic number.

11979317835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11979317835 is a deficient number, since it is larger than the sum of its proper divisors (10084339989).

11979317835 is a wasteful number, since it uses less digits than its factorization.

11979317835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55644 (or 55641 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The spelling of 11979317835 in words is "eleven billion, nine hundred seventy-nine million, three hundred seventeen thousand, eight hundred thirty-five".