16180653845 has 18 divisors (see below), whose sum is σ = 19592776098. Its totient is φ = 12828246048.

The previous prime is 16180653823. The next prime is 16180653869. The reversal of 16180653845 is 54835608161.

16180653845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4642241956 + 11538411889 = 68134^2 + 107417^2 .

It is not a de Polignac number, because 16180653845 - 2⁸ = 16180653589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16180653845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46362731 + ... + 46363079.

It is an arithmetic number, because the mean of its divisors is an integer number (1088487561).

Almost surely, 2^16180653845 is an apocalyptic number.

It is an amenable number.

16180653845 is a deficient number, since it is larger than the sum of its proper divisors (3412122253).

16180653845 is an frugal number, since it uses more digits than its factorization.

16180653845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 16180653845 in words is "sixteen billion, one hundred eighty million, six hundred fifty-three thousand, eight hundred forty-five".