4278538257239 has 2 divisors, whose sum is σ = 4278538257240. Its totient is φ = 4278538257238.

The previous prime is 4278538257167. The next prime is 4278538257283. The reversal of 4278538257239 is 9327528358724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4278538257239 - 2²⁸ = 4278269821783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4278538857239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139269128619 + 2139269128620.

It is an arithmetic number, because the mean of its divisors is an integer number (2139269128620).

Almost surely, 2^{4278538257239} is an apocalyptic number.

4278538257239 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278538257239 is an equidigital number, since it uses as much as digits as its factorization.

4278538257239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 203212800, while the sum is 65.

The spelling of 4278538257239 in words is "four trillion, two hundred seventy-eight billion, five hundred thirty-eight million, two hundred fifty-seven thousand, two hundred thirty-nine".