199856530548 has 48 divisors (see below), whose sum is σ = 518648444160. Its totient is φ = 66554315712.

The previous prime is 199856530543. The next prime is 199856530637. The reversal of 199856530548 is 845035658991.

199856530548 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 56 + 5 + 30 + 548 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199856530543) 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, 784140 + ... + 1007267.

It is an arithmetic number, because the mean of its divisors is an integer number (10805175920).

Almost surely, 2^199856530548 is an apocalyptic number.

199856530548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

199856530548 is an abundant number, since it is smaller than the sum of its proper divisors (318791913612).

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

199856530548 is a wasteful number, since it uses less digits than its factorization.

199856530548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792453 (or 1792445 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 63.

The spelling of 199856530548 in words is "one hundred ninety-nine billion, eight hundred fifty-six million, five hundred thirty thousand, five hundred forty-eight".