16545766052525 has 6 divisors (see below), whose sum is σ = 20516749905162. Its totient is φ = 13236612842000.

The previous prime is 16545766052489. The next prime is 16545766052533. The reversal of 16545766052525 is 52525066754561.

It can be written as a sum of positive squares in 3 ways, for example, as 1441762138756 + 15104003913769 = 1200734^2 + 3886387^2 .

It is not a de Polignac number, because 16545766052525 - 2¹⁴ = 16545766036141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330915321026 + ... + 330915321075.

It is an arithmetic number, because the mean of its divisors is an integer number (3419458317527).

Almost surely, 2^{16545766052525} is an apocalyptic number.

It is an amenable number.

16545766052525 is a deficient number, since it is larger than the sum of its proper divisors (3970983852637).

16545766052525 is an equidigital number, since it uses as much as digits as its factorization.

16545766052525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661830642111 (or 661830642106 counting only the distinct ones).

The product of its (nonzero) digits is 75600000, while the sum is 59.

The spelling of 16545766052525 in words is "sixteen trillion, five hundred forty-five billion, seven hundred sixty-six million, fifty-two thousand, five hundred twenty-five".