2661512226 has 16 divisors (see below), whose sum is σ = 5329597728. Its totient is φ = 886075200.

The previous prime is 2661512213. The next prime is 2661512237. The reversal of 2661512226 is 6222151662.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268615 + ... + 278346.

It is an arithmetic number, because the mean of its divisors is an integer number (333099858).

Almost surely, 2^2661512226 is an apocalyptic number.

2661512226 is an abundant number, since it is smaller than the sum of its proper divisors (2668085502).

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

2661512226 is a wasteful number, since it uses less digits than its factorization.

2661512226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547777.

The product of its digits is 17280, while the sum is 33.

The square root of 2661512226 is about 51589.8461521257. The cubic root of 2661512226 is about 1385.8285000262.

Adding to 2661512226 its reverse (6222151662), we get a palindrome (8883663888).

The spelling of 2661512226 in words is "two billion, six hundred sixty-one million, five hundred twelve thousand, two hundred twenty-six".