248948380781 has 2 divisors, whose sum is σ = 248948380782. Its totient is φ = 248948380780.

The previous prime is 248948380771. The next prime is 248948380801. The reversal of 248948380781 is 187083849842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187091716681 + 61856664100 = 432541^2 + 248710^2 .

It is a cyclic number.

It is not a de Polignac number, because 248948380781 - 2⁶ = 248948380717 is a prime.

It is a super-2 number, since 2×248948380781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248948380711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124474190390 + 124474190391.

It is an arithmetic number, because the mean of its divisors is an integer number (124474190391).

Almost surely, 2^248948380781 is an apocalyptic number.

It is an amenable number.

248948380781 is a deficient number, since it is larger than the sum of its proper divisors (1).

248948380781 is an equidigital number, since it uses as much as digits as its factorization.

248948380781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24772608, while the sum is 62.

The spelling of 248948380781 in words is "two hundred forty-eight billion, nine hundred forty-eight million, three hundred eighty thousand, seven hundred eighty-one".