16677755325445 has 4 divisors (see below), whose sum is σ = 20013306390540. Its totient is φ = 13342204260352.

The previous prime is 16677755325443. The next prime is 16677755325481. The reversal of 16677755325445 is 54452355777661.

It is a happy number.

16677755325445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7712389940161 + 8965365385284 = 2777119^2 + 2994222^2 .

It is a cyclic number.

It is not a de Polignac number, because 16677755325445 - 2¹ = 16677755325443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16677755325443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667775532540 + ... + 1667775532549.

It is an arithmetic number, because the mean of its divisors is an integer number (5003326597635).

Almost surely, 2^{16677755325445} is an apocalyptic number.

It is an amenable number.

16677755325445 is a deficient number, since it is larger than the sum of its proper divisors (3335551065095).

16677755325445 is an equidigital number, since it uses as much as digits as its factorization.

16677755325445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335551065094.

The product of its digits is 740880000, while the sum is 67.

The spelling of 16677755325445 in words is "sixteen trillion, six hundred seventy-seven billion, seven hundred fifty-five million, three hundred twenty-five thousand, four hundred forty-five".