16638071299 has 4 divisors (see below), whose sum is σ = 16992072864. Its totient is φ = 16284069736.

The previous prime is 16638071293. The next prime is 16638071327. The reversal of 16638071299 is 99217083661.

It is a happy number.

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 16638071299 - 2¹¹ = 16638069251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16638071293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177000712 + ... + 177000805.

It is an arithmetic number, because the mean of its divisors is an integer number (4248018216).

Almost surely, 2^16638071299 is an apocalyptic number.

16638071299 is a deficient number, since it is larger than the sum of its proper divisors (354001565).

16638071299 is an equidigital number, since it uses as much as digits as its factorization.

16638071299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354001564.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 16638071299 in words is "sixteen billion, six hundred thirty-eight million, seventy-one thousand, two hundred ninety-nine".