2865554285857 has 2 divisors, whose sum is σ = 2865554285858. Its totient is φ = 2865554285856.

The previous prime is 2865554285833. The next prime is 2865554285879. The reversal of 2865554285857 is 7585824555682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2420510528401 + 445043757456 = 1555799^2 + 667116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2865554285857 is a prime.

It is a super-2 number, since 2×2865554285857² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2865554285887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432777142928 + 1432777142929.

It is an arithmetic number, because the mean of its divisors is an integer number (1432777142929).

Almost surely, 2^{2865554285857} is an apocalyptic number.

It is an amenable number.

2865554285857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865554285857 is an equidigital number, since it uses as much as digits as its factorization.

2865554285857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1075200000, while the sum is 70.

The spelling of 2865554285857 in words is "two trillion, eight hundred sixty-five billion, five hundred fifty-four million, two hundred eighty-five thousand, eight hundred fifty-seven".