199650663091 has 8 divisors (see below), whose sum is σ = 217807176384. Its totient is φ = 181495225320.

The previous prime is 199650663089. The next prime is 199650663109. The reversal of 199650663091 is 190366056991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199650663091 - 2¹ = 199650663089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199650663061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147276 + ... + 648838.

It is an arithmetic number, because the mean of its divisors is an integer number (27225897048).

Almost surely, 2^199650663091 is an apocalyptic number.

199650663091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

199650663091 is a deficient number, since it is larger than the sum of its proper divisors (18156513293).

199650663091 is a wasteful number, since it uses less digits than its factorization.

199650663091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537761.

The product of its (nonzero) digits is 2361960, while the sum is 55.

The spelling of 199650663091 in words is "one hundred ninety-nine billion, six hundred fifty million, six hundred sixty-three thousand, ninety-one".