2665503450 has 144 divisors (see below), whose sum is σ = 7523268480. Its totient is φ = 701550720.

The previous prime is 2665503443. The next prime is 2665503461. The reversal of 2665503450 is 543055662.

It is a happy number.

2665503450 is a `hidden beast` number, since 2 + 66 + 550 + 3 + 45 + 0 = 666.

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 71 ways as a sum of consecutive naturals, for example, 958462 + ... + 961238.

It is an arithmetic number, because the mean of its divisors is an integer number (52244920).

Almost surely, 2^2665503450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665503450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3761634240).

2665503450 is an abundant number, since it is smaller than the sum of its proper divisors (4857765030).

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

2665503450 is a wasteful number, since it uses less digits than its factorization.

2665503450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 2665503450 is about 51628.5139239936. The cubic root of 2665503450 is about 1386.5208870288.

It can be divided in two parts, 266 and 5503450, that added together give a square (5503716 = 2346²).

The spelling of 2665503450 in words is "two billion, six hundred sixty-five million, five hundred three thousand, four hundred fifty".