199355985408 has 80 divisors (see below), whose sum is σ = 531190573056. Its totient is φ = 66440263680.

The previous prime is 199355985341. The next prime is 199355985421. The reversal of 199355985408 is 804589553991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15726913 + ... + 15739583.

Almost surely, 2^199355985408 is an apocalyptic number.

It is an amenable number.

199355985408 is an abundant number, since it is smaller than the sum of its proper divisors (331834587648).

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

199355985408 is a wasteful number, since it uses less digits than its factorization.

199355985408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22935 (or 22919 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 66.

The spelling of 199355985408 in words is "one hundred ninety-nine billion, three hundred fifty-five million, nine hundred eighty-five thousand, four hundred eight".