2661513306 has 32 divisors (see below), whose sum is σ = 5348616000. Its totient is φ = 882918144.

The previous prime is 2661513301. The next prime is 2661513373. The reversal of 2661513306 is 6033151662.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2661513301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1295376 + ... + 1297428.

It is an arithmetic number, because the mean of its divisors is an integer number (167144250).

Almost surely, 2^2661513306 is an apocalyptic number.

2661513306 is an abundant number, since it is smaller than the sum of its proper divisors (2687102694).

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

2661513306 is a wasteful number, since it uses less digits than its factorization.

2661513306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 2661513306 is about 51589.8566193007. The cubic root of 2661513306 is about 1385.8286874753.

Adding to 2661513306 its reverse (6033151662), we get a palindrome (8694664968).

The spelling of 2661513306 in words is "two billion, six hundred sixty-one million, five hundred thirteen thousand, three hundred six".