4278541007249 has 2 divisors, whose sum is σ = 4278541007250. Its totient is φ = 4278541007248.

The previous prime is 4278541007197. The next prime is 4278541007263. The reversal of 4278541007249 is 9427001458724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3390551409025 + 887989598224 = 1841345^2 + 942332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4278541007249 is a prime.

It is a super-2 number, since 2×4278541007249² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4278541007249.

It is not a weakly prime, because it can be changed into another prime (4278541003249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139270503624 + 2139270503625.

It is an arithmetic number, because the mean of its divisors is an integer number (2139270503625).

Almost surely, 2^{4278541007249} is an apocalyptic number.

It is an amenable number.

4278541007249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278541007249 is an equidigital number, since it uses as much as digits as its factorization.

4278541007249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 4278541007249 in words is "four trillion, two hundred seventy-eight billion, five hundred forty-one million, seven thousand, two hundred forty-nine".