199856994147696 has 160 divisors (see below), whose sum is σ = 543463099564032. Its totient is φ = 63200532695040.

The previous prime is 199856994147691. The next prime is 199856994147697. The reversal of 199856994147696 is 696741499658991.

It is a Harshad number since it is a multiple of its sum of digits (93).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199856994147691) 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 31 ways as a sum of consecutive naturals, for example, 93022641 + ... + 95146863.

Almost surely, 2^{199856994147696} is an apocalyptic number.

199856994147696 is a gapful number since it is divisible by the number (16) 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 199856994147696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271731549782016).

199856994147696 is an abundant number, since it is smaller than the sum of its proper divisors (343606105416336).

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

199856994147696 is a wasteful number, since it uses less digits than its factorization.

199856994147696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125511 (or 2125505 counting only the distinct ones).

The product of its digits is 57140536320, while the sum is 93.

The spelling of 199856994147696 in words is "one hundred ninety-nine trillion, eight hundred fifty-six billion, nine hundred ninety-four million, one hundred forty-seven thousand, six hundred ninety-six".