16421642012 has 12 divisors (see below), whose sum is σ = 30250393320. Its totient is φ = 7778672496.

The previous prime is 16421642011. The next prime is 16421642023. The reversal of 16421642012 is 21024612461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421642011) 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, 108037043 + ... + 108037194.

It is an arithmetic number, because the mean of its divisors is an integer number (2520866110).

Almost surely, 2^16421642012 is an apocalyptic number.

It is an amenable number.

16421642012 is a deficient number, since it is larger than the sum of its proper divisors (13828751308).

16421642012 is a wasteful number, since it uses less digits than its factorization.

16421642012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216074260 (or 216074258 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 16421642012 in words is "sixteen billion, four hundred twenty-one million, six hundred forty-two thousand, twelve".