199353736453 has 4 divisors (see below), whose sum is σ = 199596555468. Its totient is φ = 199110917440.

The previous prime is 199353736397. The next prime is 199353736459. The reversal of 199353736453 is 354637353991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 112078987524 + 87274748929 = 334782^2 + 295423^2 .

It is a cyclic number.

It is not a de Polignac number, because 199353736453 - 2⁹ = 199353735941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199353736459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121408276 + ... + 121409917.

It is an arithmetic number, because the mean of its divisors is an integer number (49899138867).

Almost surely, 2^199353736453 is an apocalyptic number.

It is an amenable number.

199353736453 is a deficient number, since it is larger than the sum of its proper divisors (242819015).

199353736453 is an equidigital number, since it uses as much as digits as its factorization.

199353736453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242819014.

The product of its digits is 27556200, while the sum is 58.

The spelling of 199353736453 in words is "one hundred ninety-nine billion, three hundred fifty-three million, seven hundred thirty-six thousand, four hundred fifty-three".