199447863552 has 216 divisors, whose sum is σ = 661016551104. Its totient is φ = 56654917632.

The previous prime is 199447863547. The next prime is 199447863661. The reversal of 199447863552 is 255368744991.

199447863552 is a `hidden beast` number, since 1 + 9 + 9 + 4 + 4 + 78 + 6 + 3 + 552 = 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 self number, because there is not a number n which added to its sum of digits gives 199447863552.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2754403 + ... + 2825885.

Almost surely, 2^199447863552 is an apocalyptic number.

199447863552 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 199447863552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330508275552).

199447863552 is an abundant number, since it is smaller than the sum of its proper divisors (461568687552).

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

199447863552 is a wasteful number, since it uses less digits than its factorization.

199447863552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71685 (or 71668 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 199447863552 in words is "one hundred ninety-nine billion, four hundred forty-seven million, eight hundred sixty-three thousand, five hundred fifty-two".