1260708732985 has 64 divisors (see below), whose sum is σ = 1654441588800. Its totient is φ = 916701401088.

The previous prime is 1260708732947. The next prime is 1260708732989. The reversal of 1260708732985 is 5892378070621.

It is a happy number.

It can be written as a sum of positive squares in 32 ways, for example, as 1231008002064 + 29700730921 = 1109508^2 + 172339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1260708732985 - 2¹¹ = 1260708730937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1260708732989) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1244529339 + ... + 1244530351.

It is an arithmetic number, because the mean of its divisors is an integer number (25850649825).

Almost surely, 2^{1260708732985} is an apocalyptic number.

It is an amenable number.

1260708732985 is a deficient number, since it is larger than the sum of its proper divisors (393732855815).

1260708732985 is a wasteful number, since it uses less digits than its factorization.

1260708732985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 1260708732985 in words is "one trillion, two hundred sixty billion, seven hundred eight million, seven hundred thirty-two thousand, nine hundred eighty-five".