199667096685 has 128 divisors (see below), whose sum is σ = 412250342400. Its totient is φ = 90927691776.

The previous prime is 199667096663. The next prime is 199667096689. The reversal of 199667096685 is 586690766991.

It is not a de Polignac number, because 199667096685 - 2¹² = 199667092589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199667096689) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20585757 + ... + 20595453.

It is an arithmetic number, because the mean of its divisors is an integer number (3220705800).

Almost surely, 2^199667096685 is an apocalyptic number.

199667096685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199667096685 is an abundant number, since it is smaller than the sum of its proper divisors (212583245715).

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

199667096685 is an frugal number, since it uses more digits than its factorization.

199667096685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999 (or 9981 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 72.

The spelling of 199667096685 in words is "one hundred ninety-nine billion, six hundred sixty-seven million, ninety-six thousand, six hundred eighty-five".