178273645045 has 16 divisors (see below), whose sum is σ = 214804794240. Its totient is φ = 142035038784.

The previous prime is 178273645009. The next prime is 178273645049. The reversal of 178273645045 is 540546372871.

It is a cyclic number.

It is not a de Polignac number, because 178273645045 - 2¹¹ = 178273642997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 178273644983 and 178273645001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178273645049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3746392 + ... + 3793678.

It is an arithmetic number, because the mean of its divisors is an integer number (13425299640).

Almost surely, 2^178273645045 is an apocalyptic number.

It is an amenable number.

178273645045 is a deficient number, since it is larger than the sum of its proper divisors (36531149195).

178273645045 is a wasteful number, since it uses less digits than its factorization.

178273645045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50364.

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 178273645045 in words is "one hundred seventy-eight billion, two hundred seventy-three million, six hundred forty-five thousand, forty-five".