1205275735145 has 8 divisors (see below), whose sum is σ = 1446347003904. Its totient is φ = 964209840304.

The previous prime is 1205275735123. The next prime is 1205275735177. The reversal of 1205275735145 is 5415375725021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1205275735145 - 2¹⁸ = 1205275473001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205275735145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832379 + ... + 1761648.

It is an arithmetic number, because the mean of its divisors is an integer number (180793375488).

Almost surely, 2^{1205275735145} is an apocalyptic number.

It is an amenable number.

1205275735145 is a deficient number, since it is larger than the sum of its proper divisors (241071268759).

1205275735145 is an equidigital number, since it uses as much as digits as its factorization.

1205275735145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686959.

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 1205275735145 in words is "one trillion, two hundred five billion, two hundred seventy-five million, seven hundred thirty-five thousand, one hundred forty-five".