16605100556005 has 16 divisors (see below), whose sum is σ = 22198861223280. Its totient is φ = 11839392649728.

The previous prime is 16605100555991. The next prime is 16605100556027. The reversal of 16605100556005 is 50065500150661.

It can be written as a sum of positive squares in 8 ways, for example, as 1664386392321 + 14940714163684 = 1290111^2 + 3865322^2 .

It is a cyclic number.

It is not a de Polignac number, because 16605100556005 - 2²¹ = 16605098458853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4404534072 + ... + 4404537841.

It is an arithmetic number, because the mean of its divisors is an integer number (1387428826455).

Almost surely, 2^{16605100556005} is an apocalyptic number.

It is an amenable number.

16605100556005 is a deficient number, since it is larger than the sum of its proper divisors (5593760667275).

16605100556005 is a wasteful number, since it uses less digits than its factorization.

16605100556005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809071960.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 16605100556005 in words is "sixteen trillion, six hundred five billion, one hundred million, five hundred fifty-six thousand, five".