9987948497899 has 16 divisors (see below), whose sum is σ = 10325681498880. Its totient is φ = 9651196961280.

The previous prime is 9987948497861. The next prime is 9987948497957.

9987948497899 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9987948497899 - 2³¹ = 9985801014251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9987948497809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60024087 + ... + 60190255.

It is an arithmetic number, because the mean of its divisors is an integer number (645355093680).

Almost surely, 2^{9987948497899} is an apocalyptic number.

9987948497899 is a deficient number, since it is larger than the sum of its proper divisors (337733000981).

9987948497899 is a wasteful number, since it uses less digits than its factorization.

9987948497899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169110.

The product of its digits is 213324668928, while the sum is 100.

The spelling of 9987948497899 in words is "nine trillion, nine hundred eighty-seven billion, nine hundred forty-eight million, four hundred ninety-seven thousand, eight hundred ninety-nine".