9877641866663 has 8 divisors (see below), whose sum is σ = 10101177187200. Its totient is φ = 9655977134968.

The previous prime is 9877641866657. The next prime is 9877641866753. The reversal of 9877641866663 is 3666681467789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9877641866663 - 2¹² = 9877641862567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9877641866363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467636531 + ... + 467657652.

It is an arithmetic number, because the mean of its divisors is an integer number (1262647148400).

Almost surely, 2^{9877641866663} is an apocalyptic number.

9877641866663 is a deficient number, since it is larger than the sum of its proper divisors (223535320537).

9877641866663 is a wasteful number, since it uses less digits than its factorization.

9877641866663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935294421.

The product of its digits is 2633637888, while the sum is 77.

The spelling of 9877641866663 in words is "nine trillion, eight hundred seventy-seven billion, six hundred forty-one million, eight hundred sixty-six thousand, six hundred sixty-three".