16420548671 has 4 divisors (see below), whose sum is σ = 16421568552. Its totient is φ = 16419528792.

The previous prime is 16420548653. The next prime is 16420548691. The reversal of 16420548671 is 17684502461.

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 16420548671 - 2¹⁴ = 16420532287 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 (16420548611) 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, 485396 + ... + 518121.

It is an arithmetic number, because the mean of its divisors is an integer number (4105392138).

Almost surely, 2^16420548671 is an apocalyptic number.

16420548671 is a deficient number, since it is larger than the sum of its proper divisors (1019881).

16420548671 is a wasteful number, since it uses less digits than its factorization.

16420548671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019880.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 16420548671 in words is "sixteen billion, four hundred twenty million, five hundred forty-eight thousand, six hundred seventy-one".