199453340963 has 4 divisors (see below), whose sum is σ = 199454306520. Its totient is φ = 199452375408.

The previous prime is 199453340941. The next prime is 199453341049. The reversal of 199453340963 is 369043354991.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 369043354991 = 2237 ⋅164972443.

It is a cyclic number.

It is not a de Polignac number, because 199453340963 - 2³⁰ = 198379599139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199453340899 and 199453340908.

It is not an unprimeable number, because it can be changed into a prime (199453340923) 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, 33653 + ... + 632486.

It is an arithmetic number, because the mean of its divisors is an integer number (49863576630).

Almost surely, 2^199453340963 is an apocalyptic number.

199453340963 is a deficient number, since it is larger than the sum of its proper divisors (965557).

199453340963 is an equidigital number, since it uses as much as digits as its factorization.

199453340963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965556.

The product of its (nonzero) digits is 9447840, while the sum is 56.

The spelling of 199453340963 in words is "one hundred ninety-nine billion, four hundred fifty-three million, three hundred forty thousand, nine hundred sixty-three".