16670430407647 has 4 divisors (see below), whose sum is σ = 17651043961056. Its totient is φ = 15689816854240.

The previous prime is 16670430407639. The next prime is 16670430407669. The reversal of 16670430407647 is 74670403407661.

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 16670430407647 - 2³ = 16670430407639 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 (16670430407047) 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, 490306776679 + ... + 490306776712.

It is an arithmetic number, because the mean of its divisors is an integer number (4412760990264).

Almost surely, 2^{16670430407647} is an apocalyptic number.

16670430407647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16670430407647 is a deficient number, since it is larger than the sum of its proper divisors (980613553409).

16670430407647 is an equidigital number, since it uses as much as digits as its factorization.

16670430407647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980613553408.

The product of its (nonzero) digits is 14224896, while the sum is 55.

The spelling of 16670430407647 in words is "sixteen trillion, six hundred seventy billion, four hundred thirty million, four hundred seven thousand, six hundred forty-seven".