2669281056 has 144 divisors (see below), whose sum is σ = 8374537080. Its totient is φ = 801239040.

The previous prime is 2669281051. The next prime is 2669281057. The reversal of 2669281056 is 6501829662.

It can be written as a sum of positive squares in 4 ways, for example, as 1291683600 + 1377597456 = 35940^2 + 37116^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×2669281056² = 14250122711840950272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2669281051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144810 + ... + 162198.

Almost surely, 2^2669281056 is an apocalyptic number.

2669281056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2669281056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4187268540).

2669281056 is an abundant number, since it is smaller than the sum of its proper divisors (5705256024).

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

2669281056 is a wasteful number, since it uses less digits than its factorization.

2669281056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17459 (or 17448 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2669281056 is about 51665.0854639765. The cubic root of 2669281056 is about 1387.1755797635.

The spelling of 2669281056 in words is "two billion, six hundred sixty-nine million, two hundred eighty-one thousand, fifty-six".