1082811772265 has 4 divisors (see below), whose sum is σ = 1299374126724. Its totient is φ = 866249417808.

The previous prime is 1082811772243. The next prime is 1082811772267. The reversal of 1082811772265 is 5622771182801.

It is a happy number.

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 492145743961 + 590666028304 = 701531^2 + 768548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1082811772265 - 2¹⁶ = 1082811706729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1082811772267) 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, 108281177222 + ... + 108281177231.

It is an arithmetic number, because the mean of its divisors is an integer number (324843531681).

Almost surely, 2^{1082811772265} is an apocalyptic number.

It is an amenable number.

1082811772265 is a deficient number, since it is larger than the sum of its proper divisors (216562354459).

1082811772265 is an equidigital number, since it uses as much as digits as its factorization.

1082811772265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216562354458.

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 1082811772265 in words is "one trillion, eighty-two billion, eight hundred eleven million, seven hundred seventy-two thousand, two hundred sixty-five".