2556338065019 has 2 divisors, whose sum is σ = 2556338065020. Its totient is φ = 2556338065018.

The previous prime is 2556338064997. The next prime is 2556338065063. The reversal of 2556338065019 is 9105608336552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2556338065019 is a prime.

It is a super-2 number, since 2×2556338065019² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2556338065219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278169032509 + 1278169032510.

It is an arithmetic number, because the mean of its divisors is an integer number (1278169032510).

Almost surely, 2^{2556338065019} is an apocalyptic number.

2556338065019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556338065019 is an equidigital number, since it uses as much as digits as its factorization.

2556338065019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 2556338065019 in words is "two trillion, five hundred fifty-six billion, three hundred thirty-eight million, sixty-five thousand, nineteen".