2888664161945 has 4 divisors (see below), whose sum is σ = 3466396994340. Its totient is φ = 2310931329552.

The previous prime is 2888664161941. The next prime is 2888664161963. The reversal of 2888664161945 is 5491614668882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1600784178841 + 1287879983104 = 1265221^2 + 1134848^2 .

It is a cyclic number.

It is not a de Polignac number, because 2888664161945 - 2² = 2888664161941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2888664161941) 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 in 3 ways as a sum of consecutive naturals, for example, 288866416190 + ... + 288866416199.

It is an arithmetic number, because the mean of its divisors is an integer number (866599248585).

Almost surely, 2^{2888664161945} is an apocalyptic number.

It is an amenable number.

2888664161945 is a deficient number, since it is larger than the sum of its proper divisors (577732832395).

2888664161945 is an equidigital number, since it uses as much as digits as its factorization.

2888664161945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577732832394.

The product of its digits is 159252480, while the sum is 68.

The spelling of 2888664161945 in words is "two trillion, eight hundred eighty-eight billion, six hundred sixty-four million, one hundred sixty-one thousand, nine hundred forty-five".