199981845324 has 24 divisors (see below), whose sum is σ = 518471451120. Its totient is φ = 66660615072.

The previous prime is 199981845307. The next prime is 199981845331. The reversal of 199981845324 is 423548189991.

199981845324 is a `hidden beast` number, since 1 + 9 + 9 + 98 + 1 + 8 + 4 + 532 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925841769 + ... + 925841984.

It is an arithmetic number, because the mean of its divisors is an integer number (21602977130).

Almost surely, 2^199981845324 is an apocalyptic number.

It is an amenable number.

199981845324 is an abundant number, since it is smaller than the sum of its proper divisors (318489605796).

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

199981845324 is a wasteful number, since it uses less digits than its factorization.

199981845324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851683766 (or 1851683758 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The spelling of 199981845324 in words is "one hundred ninety-nine billion, nine hundred eighty-one million, eight hundred forty-five thousand, three hundred twenty-four".