199620028366 has 32 divisors (see below), whose sum is σ = 340182828000. Its totient is φ = 87019524480.

The previous prime is 199620028351. The next prime is 199620028367. The reversal of 199620028366 is 663820026991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199620028367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954885 + ... + 1145008.

It is an arithmetic number, because the mean of its divisors is an integer number (10630713375).

Almost surely, 2^199620028366 is an apocalyptic number.

199620028366 is a deficient number, since it is larger than the sum of its proper divisors (140562799634).

199620028366 is a wasteful number, since it uses less digits than its factorization.

199620028366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100084.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 199620028366 in words is "one hundred ninety-nine billion, six hundred twenty million, twenty-eight thousand, three hundred sixty-six".