998199766950 has 48 divisors (see below), whose sum is σ = 2621155159440. Its totient is φ = 250528568320.

The previous prime is 998199766901. The next prime is 998199766957. The reversal of 998199766950 is 59667991899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998199766957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195722895 + ... + 195727994.

It is an arithmetic number, because the mean of its divisors is an integer number (54607399155).

Almost surely, 2^998199766950 is an apocalyptic number.

998199766950 is an abundant number, since it is smaller than the sum of its proper divisors (1622955392490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998199766950 is a wasteful number, since it uses less digits than its factorization.

998199766950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391450921 (or 391450916 counting only the distinct ones).

The product of its (nonzero) digits is 595213920, while the sum is 78.

The spelling of 998199766950 in words is "nine hundred ninety-eight billion, one hundred ninety-nine million, seven hundred sixty-six thousand, nine hundred fifty".