16447966308479 has 4 divisors (see below), whose sum is σ = 16447974422376. Its totient is φ = 16447958194584.

The previous prime is 16447966308463. The next prime is 16447966308503. The reversal of 16447966308479 is 97480366974461.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 16447966308479 - 2⁴ = 16447966308463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16447966308439) 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, 1872152 + ... + 6033314.

It is an arithmetic number, because the mean of its divisors is an integer number (4111993605594).

Almost surely, 2^{16447966308479} is an apocalyptic number.

16447966308479 is a deficient number, since it is larger than the sum of its proper divisors (8113897).

16447966308479 is an equidigital number, since it uses as much as digits as its factorization.

16447966308479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113896.

The product of its (nonzero) digits is 1316818944, while the sum is 74.

The spelling of 16447966308479 in words is "sixteen trillion, four hundred forty-seven billion, nine hundred sixty-six million, three hundred eight thousand, four hundred seventy-nine".