6911640320 has 216 divisors, whose sum is σ = 18178927200. Its totient is φ = 2516287488.

The previous prime is 6911640299. The next prime is 6911640331. The reversal of 6911640320 is 230461196.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19252301 + ... + 19252659.

It is an arithmetic number, because the mean of its divisors is an integer number (84161700).

Almost surely, 2^6911640320 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 6911640320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9089463600).

6911640320 is an abundant number, since it is smaller than the sum of its proper divisors (11267286880).

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

6911640320 is a wasteful number, since it uses less digits than its factorization.

6911640320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6911640320 is about 83136.2755961560. The cubic root of 6911640320 is about 1904.8482203298.

The spelling of 6911640320 in words is "six billion, nine hundred eleven million, six hundred forty thousand, three hundred twenty".