16634395201 has 4 divisors (see below), whose sum is σ = 16634806272. Its totient is φ = 16633984132.

The previous prime is 16634395199. The next prime is 16634395223. The reversal of 16634395201 is 10259343661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16634395201 - 2¹ = 16634395199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16634395301) 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, 137281 + ... + 228286.

It is an arithmetic number, because the mean of its divisors is an integer number (4158701568).

Almost surely, 2^16634395201 is an apocalyptic number.

It is an amenable number.

16634395201 is a deficient number, since it is larger than the sum of its proper divisors (411071).

16634395201 is an equidigital number, since it uses as much as digits as its factorization.

16634395201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411070.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 16634395201 in words is "sixteen billion, six hundred thirty-four million, three hundred ninety-five thousand, two hundred one".