2563618228240 has 40 divisors (see below), whose sum is σ = 6165943847640. Its totient is φ = 990087038976.

The previous prime is 2563618228207. The next prime is 2563618228243. The reversal of 2563618228240 is 428228163652.

It can be written as a sum of positive squares in 4 ways, for example, as 197718958336 + 2365899269904 = 444656^2 + 1538148^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2563618228243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 552501609 + ... + 552506248.

It is an arithmetic number, because the mean of its divisors is an integer number (154148596191).

Almost surely, 2^{2563618228240} is an apocalyptic number.

2563618228240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563618228240 is an abundant number, since it is smaller than the sum of its proper divisors (3602325619400).

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

2563618228240 is a wasteful number, since it uses less digits than its factorization.

2563618228240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105007899 (or 1105007893 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 2563618228240 in words is "two trillion, five hundred sixty-three billion, six hundred eighteen million, two hundred twenty-eight thousand, two hundred forty".