248728437217 has 16 divisors (see below), whose sum is σ = 280204702848. Its totient is φ = 219065299200.

The previous prime is 248728437211. The next prime is 248728437229. The reversal of 248728437217 is 712734827842.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248728437217 is a prime.

It is a super-2 number, since 2×248728437217² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248728437211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917343 + ... + 1157140.

It is an arithmetic number, because the mean of its divisors is an integer number (17512793928).

Almost surely, 2^248728437217 is an apocalyptic number.

It is an amenable number.

248728437217 is a deficient number, since it is larger than the sum of its proper divisors (31476265631).

248728437217 is a wasteful number, since it uses less digits than its factorization.

248728437217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074920.

The product of its digits is 8429568, while the sum is 55.

The spelling of 248728437217 in words is "two hundred forty-eight billion, seven hundred twenty-eight million, four hundred thirty-seven thousand, two hundred seventeen".