16390200247 has 4 divisors (see below), whose sum is σ = 16918916416. Its totient is φ = 15861484080.

The previous prime is 16390200199. The next prime is 16390200271. The reversal of 16390200247 is 74200209361.

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

It is a cyclic number.

It is not a de Polignac number, because 16390200247 - 2¹⁹ = 16389675959 is a prime.

It is a super-2 number, since 2×16390200247² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390204247) 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, 264358038 + ... + 264358099.

It is an arithmetic number, because the mean of its divisors is an integer number (4229729104).

Almost surely, 2^16390200247 is an apocalyptic number.

16390200247 is a deficient number, since it is larger than the sum of its proper divisors (528716169).

16390200247 is an equidigital number, since it uses as much as digits as its factorization.

16390200247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528716168.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 16390200247 in words is "sixteen billion, three hundred ninety million, two hundred thousand, two hundred forty-seven".