7986864287808 has 168 divisors, whose sum is σ = 26478541147968. Its totient is φ = 2254467621888.

The previous prime is 7986864287783. The next prime is 7986864287819. The reversal of 7986864287808 is 8087824686897.

It is a tau number, because it is divible by the number of its divisors (168).

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, 11598291 + ... + 12267602.

It is an arithmetic number, because the mean of its divisors is an integer number (157610363976).

Almost surely, 2^{7986864287808} is an apocalyptic number.

It is an amenable number.

7986864287808 is an abundant number, since it is smaller than the sum of its proper divisors (18491676860160).

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

7986864287808 is a wasteful number, since it uses less digits than its factorization.

7986864287808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23866001 (or 23865988 counting only the distinct ones).

The product of its (nonzero) digits is 4161798144, while the sum is 81.

The spelling of 7986864287808 in words is "seven trillion, nine hundred eighty-six billion, eight hundred sixty-four million, two hundred eighty-seven thousand, eight hundred eight".