2855888927989 has 2 divisors, whose sum is σ = 2855888927990. Its totient is φ = 2855888927988.

The previous prime is 2855888927981. The next prime is 2855888928017. The reversal of 2855888927989 is 9897298885582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2229147539089 + 626741388900 = 1493033^2 + 791670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2855888927989 - 2³ = 2855888927981 is a prime.

It is a super-2 number, since 2×2855888927989² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855888927981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427944463994 + 1427944463995.

It is an arithmetic number, because the mean of its divisors is an integer number (1427944463995).

Almost surely, 2^{2855888927989} is an apocalyptic number.

It is an amenable number.

2855888927989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855888927989 is an equidigital number, since it uses as much as digits as its factorization.

2855888927989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16721510400, while the sum is 88.

The spelling of 2855888927989 in words is "two trillion, eight hundred fifty-five billion, eight hundred eighty-eight million, nine hundred twenty-seven thousand, nine hundred eighty-nine".