199924216523 has 8 divisors (see below), whose sum is σ = 204806285376. Its totient is φ = 195042427200.

The previous prime is 199924216519. The next prime is 199924216579. The reversal of 199924216523 is 325612429991.

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

It is a cyclic number.

It is not a de Polignac number, because 199924216523 - 2² = 199924216519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199924213523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2741390 + ... + 2813372.

It is an arithmetic number, because the mean of its divisors is an integer number (25600785672).

Almost surely, 2^199924216523 is an apocalyptic number.

199924216523 is a deficient number, since it is larger than the sum of its proper divisors (4882068853).

199924216523 is an equidigital number, since it uses as much as digits as its factorization.

199924216523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139765.

The product of its digits is 2099520, while the sum is 53.

The spelling of 199924216523 in words is "one hundred ninety-nine billion, nine hundred twenty-four million, two hundred sixteen thousand, five hundred twenty-three".