4278257426087 has 2 divisors, whose sum is σ = 4278257426088. Its totient is φ = 4278257426086.

The previous prime is 4278257425999. The next prime is 4278257426111. The reversal of 4278257426087 is 7806247528724.

4278257426087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4278257426087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4278257426587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139128713043 + 2139128713044.

It is an arithmetic number, because the mean of its divisors is an integer number (2139128713044).

Almost surely, 2^{4278257426087} is an apocalyptic number.

4278257426087 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278257426087 is an equidigital number, since it uses as much as digits as its factorization.

4278257426087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84295680, while the sum is 62.

The spelling of 4278257426087 in words is "four trillion, two hundred seventy-eight billion, two hundred fifty-seven million, four hundred twenty-six thousand, eighty-seven".