199089166815 has 96 divisors (see below), whose sum is σ = 444614446080. Its totient is φ = 82738307520.

The previous prime is 199089166777. The next prime is 199089166849. The reversal of 199089166815 is 518661980991.

It is not a de Polignac number, because 199089166815 - 2⁹ = 199089166303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 756219 + ... + 984908.

It is an arithmetic number, because the mean of its divisors is an integer number (4631400480).

Almost surely, 2^199089166815 is an apocalyptic number.

199089166815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199089166815 is an abundant number, since it is smaller than the sum of its proper divisors (245525279265).

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

199089166815 is a wasteful number, since it uses less digits than its factorization.

199089166815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741170 (or 1741153 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 63.

The spelling of 199089166815 in words is "one hundred ninety-nine billion, eighty-nine million, one hundred sixty-six thousand, eight hundred fifteen".