2661231116 has 12 divisors (see below), whose sum is σ = 4770743880. Its totient is φ = 1298161440.

The previous prime is 2661231109. The next prime is 2661231121. The reversal of 2661231116 is 6111321662.

It is a happy number.

2661231116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8113346 + ... + 8113673.

It is an arithmetic number, because the mean of its divisors is an integer number (397561990).

Almost surely, 2^2661231116 is an apocalyptic number.

It is an amenable number.

2661231116 is a deficient number, since it is larger than the sum of its proper divisors (2109512764).

2661231116 is a wasteful number, since it uses less digits than its factorization.

2661231116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16227064 (or 16227062 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 2661231116 is about 51587.1216099522. The cubic root of 2661231116 is about 1385.7797077191.

Adding to 2661231116 its reverse (6111321662), we get a palindrome (8772552778).

The spelling of 2661231116 in words is "two billion, six hundred sixty-one million, two hundred thirty-one thousand, one hundred sixteen".