6367991840 has 96 divisors (see below), whose sum is σ = 17209584000. Its totient is φ = 2181279744.

The previous prime is 6367991831. The next prime is 6367991857. The reversal of 6367991840 is 481997636.

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 15 ways as a sum of consecutive naturals, for example, 1676984 + ... + 1680776.

It is an arithmetic number, because the mean of its divisors is an integer number (179266500).

Almost surely, 2^6367991840 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 6367991840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8604792000).

6367991840 is an abundant number, since it is smaller than the sum of its proper divisors (10841592160).

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

6367991840 is a wasteful number, since it uses less digits than its factorization.

6367991840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5314 (or 5306 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 6367991840 is about 79799.6982450435. The cubic root of 6367991840 is about 1853.5351774829.

The spelling of 6367991840 in words is "six billion, three hundred sixty-seven million, nine hundred ninety-one thousand, eight hundred forty".