4278056260129 has 2 divisors, whose sum is σ = 4278056260130. Its totient is φ = 4278056260128.

The previous prime is 4278056260123. The next prime is 4278056260147. The reversal of 4278056260129 is 9210626508724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2822047211025 + 1456009049104 = 1679895^2 + 1206652^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278056260129 - 2³¹ = 4275908776481 is a prime.

It is a super-2 number, since 2×4278056260129² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4278056260123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139028130064 + 2139028130065.

It is an arithmetic number, because the mean of its divisors is an integer number (2139028130065).

Almost surely, 2^{4278056260129} is an apocalyptic number.

It is an amenable number.

4278056260129 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278056260129 is an equidigital number, since it uses as much as digits as its factorization.

4278056260129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 4278056260129 in words is "four trillion, two hundred seventy-eight billion, fifty-six million, two hundred sixty thousand, one hundred twenty-nine".