199563647472 has 120 divisors (see below), whose sum is σ = 640127469696. Its totient is φ = 56853767808.

The previous prime is 199563647471. The next prime is 199563647533. The reversal of 199563647472 is 274746365991.

199563647472 is a `hidden beast` number, since 1 + 9 + 9 + 563 + 64 + 7 + 4 + 7 + 2 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199563647471) 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, 64503 + ... + 635049.

Almost surely, 2^199563647472 is an apocalyptic number.

199563647472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199563647472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320063734848).

199563647472 is an abundant number, since it is smaller than the sum of its proper divisors (440563822224).

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

199563647472 is a wasteful number, since it uses less digits than its factorization.

199563647472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570915 (or 570906 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 199563647472 in words is "one hundred ninety-nine billion, five hundred sixty-three million, six hundred forty-seven thousand, four hundred seventy-two".