4171986647808 has 144 divisors (see below), whose sum is σ = 12812996292096. Its totient is φ = 1180423249920.

The previous prime is 4171986647797. The next prime is 4171986647813. The reversal of 4171986647808 is 8087466891714.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3213453 + ... + 4320908.

Almost surely, 2^{4171986647808} is an apocalyptic number.

4171986647808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4171986647808 is an abundant number, since it is smaller than the sum of its proper divisors (8641009644288).

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

4171986647808 is a wasteful number, since it uses less digits than its factorization.

4171986647808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7534490 (or 7534476 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 69.

The spelling of 4171986647808 in words is "four trillion, one hundred seventy-one billion, nine hundred eighty-six million, six hundred forty-seven thousand, eight hundred eight".