16421767066495 has 8 divisors (see below), whose sum is σ = 22521280548384. Its totient is φ = 11260640274144.

The previous prime is 16421767066483. The next prime is 16421767066513. The reversal of 16421767066495 is 59466076712461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16421767066495 - 2²³ = 16421758677887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234596672344 + ... + 234596672413.

It is an arithmetic number, because the mean of its divisors is an integer number (2815160068548).

Almost surely, 2^{16421767066495} is an apocalyptic number.

16421767066495 is a deficient number, since it is larger than the sum of its proper divisors (6099513481889).

16421767066495 is an equidigital number, since it uses as much as digits as its factorization.

16421767066495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469193344769.

The product of its (nonzero) digits is 91445760, while the sum is 64.

The spelling of 16421767066495 in words is "sixteen trillion, four hundred twenty-one billion, seven hundred sixty-seven million, sixty-six thousand, four hundred ninety-five".