16644246813713 has 4 divisors (see below), whose sum is σ = 16646448732480. Its totient is φ = 16642044894948.

The previous prime is 16644246813697. The next prime is 16644246813763. The reversal of 16644246813713 is 31731864244661.

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 16644246813713 - 2⁴ = 16644246813697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16644246813763) 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, 1100948045 + ... + 1100963162.

It is an arithmetic number, because the mean of its divisors is an integer number (4161612183120).

Almost surely, 2^{16644246813713} is an apocalyptic number.

It is an amenable number.

16644246813713 is a deficient number, since it is larger than the sum of its proper divisors (2201918767).

16644246813713 is an equidigital number, since it uses as much as digits as its factorization.

16644246813713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201918766.

The product of its digits is 13934592, while the sum is 56.

The spelling of 16644246813713 in words is "sixteen trillion, six hundred forty-four billion, two hundred forty-six million, eight hundred thirteen thousand, seven hundred thirteen".