611116783889 has 4 divisors (see below), whose sum is σ = 619488246756. Its totient is φ = 602745321024.

The previous prime is 611116783859. The next prime is 611116783909. The reversal of 611116783889 is 988387611116.

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 201910929025 + 409205854864 = 449345^2 + 639692^2 .

It is a cyclic number.

It is not a de Polignac number, because 611116783889 - 2²⁸ = 610848348433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611116783829) 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, 4185731324 + ... + 4185731469.

It is an arithmetic number, because the mean of its divisors is an integer number (154872061689).

Almost surely, 2^611116783889 is an apocalyptic number.

It is an amenable number.

611116783889 is a deficient number, since it is larger than the sum of its proper divisors (8371462867).

611116783889 is an equidigital number, since it uses as much as digits as its factorization.

611116783889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371462866.

The product of its digits is 3483648, while the sum is 59.

The spelling of 611116783889 in words is "six hundred eleven billion, one hundred sixteen million, seven hundred eighty-three thousand, eight hundred eighty-nine".