2891442280577 has 2 divisors, whose sum is σ = 2891442280578. Its totient is φ = 2891442280576.

The previous prime is 2891442280567. The next prime is 2891442280669. The reversal of 2891442280577 is 7750822441982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2843796558736 + 47645721841 = 1686356^2 + 218279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891442280577 is a prime.

It is not a weakly prime, because it can be changed into another prime (2891442280567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445721140288 + 1445721140289.

It is an arithmetic number, because the mean of its divisors is an integer number (1445721140289).

Almost surely, 2^{2891442280577} is an apocalyptic number.

It is an amenable number.

2891442280577 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891442280577 is an equidigital number, since it uses as much as digits as its factorization.

2891442280577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 2891442280577 in words is "two trillion, eight hundred ninety-one billion, four hundred forty-two million, two hundred eighty thousand, five hundred seventy-seven".