199535479744 has 28 divisors (see below), whose sum is σ = 398324216304. Its totient is φ = 99170322944.

The previous prime is 199535479729. The next prime is 199535479777. The reversal of 199535479744 is 447974535991.

It is a self number, because there is not a number n which added to its sum of digits gives 199535479744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9323869 + ... + 9345244.

It is an arithmetic number, because the mean of its divisors is an integer number (14225864868).

Almost surely, 2^199535479744 is an apocalyptic number.

It is an amenable number.

199535479744 is a deficient number, since it is larger than the sum of its proper divisors (198788736560).

199535479744 is a wasteful number, since it uses less digits than its factorization.

199535479744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18669292 (or 18669282 counting only the distinct ones).

The product of its digits is 171460800, while the sum is 67.

The spelling of 199535479744 in words is "one hundred ninety-nine billion, five hundred thirty-five million, four hundred seventy-nine thousand, seven hundred forty-four".