248568826457 has 6 divisors (see below), whose sum is σ = 289151492058. Its totient is φ = 213058994064.

The previous prime is 248568826411. The next prime is 248568826511. The reversal of 248568826457 is 754628865842.

It can be written as a sum of positive squares in only one way, i.e., 135710455321 + 112858371136 = 368389^2 + 335944^2 .

It is not a de Polignac number, because 248568826457 - 2¹⁴ = 248568810073 is a prime.

It is a super-2 number, since 2×248568826457² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 248568826393 and 248568826402.

It is not an unprimeable number, because it can be changed into a prime (248568826057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2536416548 + ... + 2536416645.

It is an arithmetic number, because the mean of its divisors is an integer number (48191915343).

Almost surely, 2^248568826457 is an apocalyptic number.

It is an amenable number.

248568826457 is a deficient number, since it is larger than the sum of its proper divisors (40582665601).

248568826457 is an equidigital number, since it uses as much as digits as its factorization.

248568826457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072833207 (or 5072833200 counting only the distinct ones).

The product of its digits is 206438400, while the sum is 65.

The spelling of 248568826457 in words is "two hundred forty-eight billion, five hundred sixty-eight million, eight hundred twenty-six thousand, four hundred fifty-seven".