199887264285 has 8 divisors (see below), whose sum is σ = 319819622880. Its totient is φ = 106606540944.

The previous prime is 199887264281. The next prime is 199887264331. The reversal of 199887264285 is 582462788991.

199887264285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 199887264285 - 2² = 199887264281 is a prime.

It is a super-2 number, since 2×199887264285² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199887264281) 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 7 ways as a sum of consecutive naturals, for example, 6662908795 + ... + 6662908824.

It is an arithmetic number, because the mean of its divisors is an integer number (39977452860).

Almost surely, 2^199887264285 is an apocalyptic number.

199887264285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199887264285 is a deficient number, since it is larger than the sum of its proper divisors (119932358595).

199887264285 is a wasteful number, since it uses less digits than its factorization.

199887264285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13325817627.

The product of its digits is 139345920, while the sum is 69.

The spelling of 199887264285 in words is "one hundred ninety-nine billion, eight hundred eighty-seven million, two hundred sixty-four thousand, two hundred eighty-five".