4278327766057 has 2 divisors, whose sum is σ = 4278327766058. Its totient is φ = 4278327766056.

The previous prime is 4278327766049. The next prime is 4278327766091. The reversal of 4278327766057 is 7506677238724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3426289848576 + 852037917481 = 1851024^2 + 923059^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278327766057 - 2³ = 4278327766049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4278327766057.

It is not a weakly prime, because it can be changed into another prime (4278327764057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139163883028 + 2139163883029.

It is an arithmetic number, because the mean of its divisors is an integer number (2139163883029).

Almost surely, 2^{4278327766057} is an apocalyptic number.

It is an amenable number.

4278327766057 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278327766057 is an equidigital number, since it uses as much as digits as its factorization.

4278327766057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165957120, while the sum is 64.

The spelling of 4278327766057 in words is "four trillion, two hundred seventy-eight billion, three hundred twenty-seven million, seven hundred sixty-six thousand, fifty-seven".