611081104489 has 4 divisors (see below), whose sum is σ = 611083014100. Its totient is φ = 611079194880.

The previous prime is 611081104463. The next prime is 611081104507. The reversal of 611081104489 is 984401180116.

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 23839360000 + 587241744489 = 154400^2 + 766317^2 .

It is a cyclic number.

It is not a de Polignac number, because 611081104489 - 2¹⁵ = 611081071721 is a prime.

It is a super-2 number, since 2×611081104489² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611081104589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344964 + ... + 1158085.

It is an arithmetic number, because the mean of its divisors is an integer number (152770753525).

Almost surely, 2^611081104489 is an apocalyptic number.

It is an amenable number.

611081104489 is a deficient number, since it is larger than the sum of its proper divisors (1909611).

611081104489 is a wasteful number, since it uses less digits than its factorization.

611081104489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909610.

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 611081104489 in words is "six hundred eleven billion, eighty-one million, one hundred four thousand, four hundred eighty-nine".