2666552240 has 80 divisors (see below), whose sum is σ = 6797779200. Its totient is φ = 964719360.

The previous prime is 2666552209. The next prime is 2666552261. The reversal of 2666552240 is 422556662.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2666552240² = 14221001697298035200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2666552194 and 2666552203.

It is an unprimeable number.

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, 167507 + ... + 182733.

It is an arithmetic number, because the mean of its divisors is an integer number (84972240).

Almost surely, 2^2666552240 is an apocalyptic number.

2666552240 is a gapful number since it is divisible by the number (20) 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 2666552240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3398889600).

2666552240 is an abundant number, since it is smaller than the sum of its proper divisors (4131226960).

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

2666552240 is a wasteful number, since it uses less digits than its factorization.

2666552240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450 (or 15444 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 2666552240 is about 51638.6700061107. The cubic root of 2666552240 is about 1386.7027136627.

The spelling of 2666552240 in words is "two billion, six hundred sixty-six million, five hundred fifty-two thousand, two hundred forty".