45078446847785 has 16 divisors (see below), whose sum is σ = 58258304724816. Its totient is φ = 33286938578688.

The previous prime is 45078446847761. The next prime is 45078446847787. The reversal of 45078446847785 is 58774864487054.

It can be written as a sum of positive squares in 8 ways, for example, as 1327140864256 + 43751305983529 = 1152016^2 + 6614477^2 .

It is a cyclic number.

It is not a de Polignac number, because 45078446847785 - 2³² = 45074151880489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45078446847787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17100854 + ... + 19560063.

It is an arithmetic number, because the mean of its divisors is an integer number (3641144045301).

Almost surely, 2^{45078446847785} is an apocalyptic number.

It is an amenable number.

45078446847785 is a deficient number, since it is larger than the sum of its proper divisors (13179857877031).

45078446847785 is a wasteful number, since it uses less digits than its factorization.

45078446847785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36679852.

The product of its (nonzero) digits is 6743654400, while the sum is 77.

The spelling of 45078446847785 in words is "forty-five trillion, seventy-eight billion, four hundred forty-six million, eight hundred forty-seven thousand, seven hundred eighty-five".