16670421216715 has 16 divisors (see below), whose sum is σ = 23151688058880. Its totient is φ = 11286447924960.

The previous prime is 16670421216643. The next prime is 16670421216721. The reversal of 16670421216715 is 51761212407661.

It is not a de Polignac number, because 16670421216715 - 2⁷ = 16670421216587 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3014539951 + ... + 3014545480.

It is an arithmetic number, because the mean of its divisors is an integer number (1446980503680).

Almost surely, 2^{16670421216715} is an apocalyptic number.

16670421216715 is a deficient number, since it is larger than the sum of its proper divisors (6481266842165).

16670421216715 is an equidigital number, since it uses as much as digits as its factorization.

16670421216715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6029085522.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 16670421216715 in words is "sixteen trillion, six hundred seventy billion, four hundred twenty-one million, two hundred sixteen thousand, seven hundred fifteen".