199672717523 has 8 divisors (see below), whose sum is σ = 208442820096. Its totient is φ = 190910005000.

The previous prime is 199672717483. The next prime is 199672717537. The reversal of 199672717523 is 325717276991.

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

It is a de Polignac number, because none of the positive numbers 2^k-199672717523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199672717583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1792253 + ... + 1900398.

It is an arithmetic number, because the mean of its divisors is an integer number (26055352512).

Almost surely, 2^199672717523 is an apocalyptic number.

199672717523 is a deficient number, since it is larger than the sum of its proper divisors (8770102573).

199672717523 is a wasteful number, since it uses less digits than its factorization.

199672717523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695025.

The product of its digits is 10001880, while the sum is 59.

The spelling of 199672717523 in words is "one hundred ninety-nine billion, six hundred seventy-two million, seven hundred seventeen thousand, five hundred twenty-three".