6911238816 has 144 divisors (see below), whose sum is σ = 20468736288. Its totient is φ = 2293920000.

The previous prime is 6911238811. The next prime is 6911238827. The reversal of 6911238816 is 6188321196.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6911238811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1950006 + ... + 1953546.

It is an arithmetic number, because the mean of its divisors is an integer number (142144002).

Almost surely, 2^6911238816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6911238816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10234368144).

6911238816 is an abundant number, since it is smaller than the sum of its proper divisors (13557497472).

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

6911238816 is a wasteful number, since it uses less digits than its factorization.

6911238816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817 (or 3797 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 6911238816 is about 83133.8608269819. The cubic root of 6911238816 is about 1904.8113347785.

The spelling of 6911238816 in words is "six billion, nine hundred eleven million, two hundred thirty-eight thousand, eight hundred sixteen".