16421710023 has 6 divisors (see below), whose sum is σ = 23720247824. Its totient is φ = 10947806676.

The previous prime is 16421710009. The next prime is 16421710043. The reversal of 16421710023 is 32001712461.

16421710023 is a `hidden beast` number, since 1 + 642 + 1 + 7 + 10 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 16421710023 - 2⁶ = 16421709959 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 (16421710043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 912317215 + ... + 912317232.

Almost surely, 2^16421710023 is an apocalyptic number.

16421710023 is a deficient number, since it is larger than the sum of its proper divisors (7298537801).

16421710023 is a wasteful number, since it uses less digits than its factorization.

16421710023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824634453 (or 1824634450 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 16421710023 in words is "sixteen billion, four hundred twenty-one million, seven hundred ten thousand, twenty-three".