1080869839697 has 4 divisors (see below), whose sum is σ = 1107232518756. Its totient is φ = 1054507160640.

The previous prime is 1080869839667. The next prime is 1080869839739. The reversal of 1080869839697 is 7969389680801.

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 262503547201 + 818366292496 = 512351^2 + 904636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1080869839697 - 2¹² = 1080869835601 is a prime.

It is a super-2 number, since 2×1080869839697² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080869839667) 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 3 ways as a sum of consecutive naturals, for example, 13181339468 + ... + 13181339549.

It is an arithmetic number, because the mean of its divisors is an integer number (276808129689).

Almost surely, 2^{1080869839697} is an apocalyptic number.

It is an amenable number.

1080869839697 is a deficient number, since it is larger than the sum of its proper divisors (26362679059).

1080869839697 is an equidigital number, since it uses as much as digits as its factorization.

1080869839697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26362679058.

The product of its (nonzero) digits is 282175488, while the sum is 74.

The spelling of 1080869839697 in words is "one trillion, eighty billion, eight hundred sixty-nine million, eight hundred thirty-nine thousand, six hundred ninety-seven".