199466021776 has 20 divisors (see below), whose sum is σ = 441674762752. Its totient is φ = 85485437856.

The previous prime is 199466021773. The next prime is 199466021779. The reversal of 199466021776 is 677120664991.

199466021776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199466021773) and next prime (199466021779).

It is a self number, because there is not a number n which added to its sum of digits gives 199466021776.

It is not an unprimeable number, because it can be changed into a prime (199466021773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890473200 + ... + 890473423.

Almost surely, 2^199466021776 is an apocalyptic number.

199466021776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199466021776 is an abundant number, since it is smaller than the sum of its proper divisors (242208740976).

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

199466021776 is a wasteful number, since it uses less digits than its factorization.

199466021776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780946638 (or 1780946632 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 199466021776 in words is "one hundred ninety-nine billion, four hundred sixty-six million, twenty-one thousand, seven hundred seventy-six".