16405273012 has 6 divisors (see below), whose sum is σ = 28709227778. Its totient is φ = 8202636504.

The previous prime is 16405272977. The next prime is 16405273111. The reversal of 16405273012 is 21037250461.

It can be written as a sum of positive squares in only one way, i.e., 8575500816 + 7829772196 = 92604^2 + 88486^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050659123 + ... + 2050659130.

Almost surely, 2^16405273012 is an apocalyptic number.

It is an amenable number.

16405273012 is a deficient number, since it is larger than the sum of its proper divisors (12303954766).

16405273012 is a wasteful number, since it uses less digits than its factorization.

16405273012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101318257 (or 4101318255 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 16405273012 in words is "sixteen billion, four hundred five million, two hundred seventy-three thousand, twelve".