2661216030 has 96 divisors (see below), whose sum is σ = 7808542560. Its totient is φ = 622890240.

The previous prime is 2661216013. The next prime is 2661216043. The reversal of 2661216030 is 306121662.

2661216030 is a `hidden beast` number, since 2 + 6 + 612 + 16 + 0 + 30 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2661215985 and 2661216003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17637 + ... + 75056.

It is an arithmetic number, because the mean of its divisors is an integer number (81338985).

Almost surely, 2^2661216030 is an apocalyptic number.

2661216030 is an abundant number, since it is smaller than the sum of its proper divisors (5147326530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2661216030 is a wasteful number, since it uses less digits than its factorization.

2661216030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92746 (or 92743 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2661216030 is about 51586.9753910810. The cubic root of 2661216030 is about 1385.7770891425. Note that the first 3 decimals are identical.

Adding to 2661216030 its reverse (306121662), we get a palindrome (2967337692).

The spelling of 2661216030 in words is "two billion, six hundred sixty-one million, two hundred sixteen thousand, thirty".