2556338065067 has 2 divisors, whose sum is σ = 2556338065068. Its totient is φ = 2556338065066.

The previous prime is 2556338065063. The next prime is 2556338065081. The reversal of 2556338065067 is 7605608336552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2556338065067 - 2² = 2556338065063 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556338065063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278169032533 + 1278169032534.

It is an arithmetic number, because the mean of its divisors is an integer number (1278169032534).

Almost surely, 2^{2556338065067} is an apocalyptic number.

2556338065067 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556338065067 is an equidigital number, since it uses as much as digits as its factorization.

2556338065067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216000, while the sum is 56.

The spelling of 2556338065067 in words is "two trillion, five hundred fifty-six billion, three hundred thirty-eight million, sixty-five thousand, sixty-seven".