9876640638863 has 2 divisors, whose sum is σ = 9876640638864. Its totient is φ = 9876640638862.

The previous prime is 9876640638827. The next prime is 9876640638889. The reversal of 9876640638863 is 3688360466789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9876640638863 - 2³⁰ = 9875566897039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9876640638803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4938320319431 + 4938320319432.

It is an arithmetic number, because the mean of its divisors is an integer number (4938320319432).

Almost surely, 2^{9876640638863} is an apocalyptic number.

9876640638863 is a deficient number, since it is larger than the sum of its proper divisors (1).

9876640638863 is an equidigital number, since it uses as much as digits as its factorization.

9876640638863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1504935936, while the sum is 74.

The spelling of 9876640638863 in words is "nine trillion, eight hundred seventy-six billion, six hundred forty million, six hundred thirty-eight thousand, eight hundred sixty-three".