998863663371 has 32 divisors (see below), whose sum is σ = 1596740428800. Its totient is φ = 543335237760.

The previous prime is 998863663361. The next prime is 998863663379. The reversal of 998863663371 is 173366368899.

It is not a de Polignac number, because 998863663371 - 2⁷ = 998863663243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998863663296 and 998863663305.

It is not an unprimeable number, because it can be changed into a prime (998863663379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11507256 + ... + 11593733.

It is an arithmetic number, because the mean of its divisors is an integer number (49898138400).

Almost surely, 2^998863663371 is an apocalyptic number.

998863663371 is a deficient number, since it is larger than the sum of its proper divisors (597876765429).

998863663371 is a wasteful number, since it uses less digits than its factorization.

998863663371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23101099.

The product of its digits is 211631616, while the sum is 69.

The spelling of 998863663371 in words is "nine hundred ninety-eight billion, eight hundred sixty-three million, six hundred sixty-three thousand, three hundred seventy-one".