248566715920 has 20 divisors (see below), whose sum is σ = 577917614700. Its totient is φ = 99426686336.

The previous prime is 248566715899. The next prime is 248566715921. The reversal of 248566715920 is 29517665842.

It can be written as a sum of positive squares in 2 ways, for example, as 26171474176 + 222395241744 = 161776^2 + 471588^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (248566715921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553541895 + ... + 1553542054.

It is an arithmetic number, because the mean of its divisors is an integer number (28895880735).

Almost surely, 2^248566715920 is an apocalyptic number.

248566715920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248566715920 is an abundant number, since it is smaller than the sum of its proper divisors (329350898780).

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

248566715920 is a wasteful number, since it uses less digits than its factorization.

248566715920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107083962 (or 3107083956 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 248566715920 in words is "two hundred forty-eight billion, five hundred sixty-six million, seven hundred fifteen thousand, nine hundred twenty".