199902339656 has 32 divisors (see below), whose sum is σ = 395507836800. Its totient is φ = 94531240320.

The previous prime is 199902339647. The next prime is 199902339697. The reversal of 199902339656 is 656933209991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6087140 + ... + 6119891.

It is an arithmetic number, because the mean of its divisors is an integer number (12359619900).

Almost surely, 2^199902339656 is an apocalyptic number.

It is an amenable number.

199902339656 is a deficient number, since it is larger than the sum of its proper divisors (195605497144).

199902339656 is a wasteful number, since it uses less digits than its factorization.

199902339656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12207149 (or 12207145 counting only the distinct ones).

The product of its (nonzero) digits is 21257640, while the sum is 62.

The spelling of 199902339656 in words is "one hundred ninety-nine billion, nine hundred two million, three hundred thirty-nine thousand, six hundred fifty-six".