2661055290 has 48 divisors (see below), whose sum is σ = 6927921000. Its totient is φ = 708673536.

The previous prime is 2661055289. The next prime is 2661055291. The reversal of 2661055290 is 925501662.

2661055290 is a `hidden beast` number, since 2 + 6 + 6 + 10 + 552 + 90 = 666.

It is an interprime number because it is at equal distance from previous prime (2661055289) and next prime (2661055291).

It can be written as a sum of positive squares in 4 ways, for example, as 1121513121 + 1539542169 = 33489^2 + 39237^2 .

It is not an unprimeable number, because it can be changed into a prime (2661055291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49986 + ... + 88434.

Almost surely, 2^2661055290 is an apocalyptic number.

2661055290 is an abundant number, since it is smaller than the sum of its proper divisors (4266865710).

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

2661055290 is a wasteful number, since it uses less digits than its factorization.

2661055290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39231 (or 39228 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 2661055290 is about 51585.4174161652. The cubic root of 2661055290 is about 1385.7491878257.

The spelling of 2661055290 in words is "two billion, six hundred sixty-one million, fifty-five thousand, two hundred ninety".