2661270288 has 60 divisors (see below), whose sum is σ = 7065954000. Its totient is φ = 863093376.

The previous prime is 2661270281. The next prime is 2661270317. The reversal of 2661270288 is 8820721662.

It is a happy number.

2661270288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2661270281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45463 + ... + 85961.

It is an arithmetic number, because the mean of its divisors is an integer number (117765900).

Almost surely, 2^2661270288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2661270288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3532977000).

2661270288 is an abundant number, since it is smaller than the sum of its proper divisors (4404683712).

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

2661270288 is a wasteful number, since it uses less digits than its factorization.

2661270288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40584 (or 40541 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 2661270288 is about 51587.5012769566. The cubic root of 2661270288 is about 1385.7865070153.

The spelling of 2661270288 in words is "two billion, six hundred sixty-one million, two hundred seventy thousand, two hundred eighty-eight".