16386387105845 has 32 divisors (see below), whose sum is σ = 20212665804000. Its totient is φ = 12743729381376.

The previous prime is 16386387105811. The next prime is 16386387105887. The reversal of 16386387105845 is 54850178368361.

It can be written as a sum of positive squares in 16 ways, for example, as 3764752448209 + 12621634657636 = 1940297^2 + 3552694^2 .

It is a cyclic number.

It is not a de Polignac number, because 16386387105845 - 2¹⁴ = 16386387089461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1851773981 + ... + 1851782829.

It is an arithmetic number, because the mean of its divisors is an integer number (631645806375).

Almost surely, 2^{16386387105845} is an apocalyptic number.

It is an amenable number.

16386387105845 is a deficient number, since it is larger than the sum of its proper divisors (3826278698155).

16386387105845 is a wasteful number, since it uses less digits than its factorization.

16386387105845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16457.

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 16386387105845 in words is "sixteen trillion, three hundred eighty-six billion, three hundred eighty-seven million, one hundred five thousand, eight hundred forty-five".