9887495542819 has 2 divisors, whose sum is σ = 9887495542820. Its totient is φ = 9887495542818.

The previous prime is 9887495542753. The next prime is 9887495542849. The reversal of 9887495542819 is 9182455947889.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9887495542819 - 2²³ = 9887487154211 is a prime.

It is a super-2 number, since 2×9887495542819² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9887495542849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4943747771409 + 4943747771410.

It is an arithmetic number, because the mean of its divisors is an integer number (4943747771410).

Almost surely, 2^{9887495542819} is an apocalyptic number.

9887495542819 is a deficient number, since it is larger than the sum of its proper divisors (1).

9887495542819 is an equidigital number, since it uses as much as digits as its factorization.

9887495542819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2090188800, while the sum is 79.

The spelling of 9887495542819 in words is "nine trillion, eight hundred eighty-seven billion, four hundred ninety-five million, five hundred forty-two thousand, eight hundred nineteen".