2665242439417 has 2 divisors, whose sum is σ = 2665242439418. Its totient is φ = 2665242439416.

The previous prime is 2665242439411. The next prime is 2665242439477. The reversal of 2665242439417 is 7149342425662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2286942405696 + 378300033721 = 1512264^2 + 615061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2665242439417 is a prime.

It is not a weakly prime, because it can be changed into another prime (2665242439411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332621219708 + 1332621219709.

It is an arithmetic number, because the mean of its divisors is an integer number (1332621219709).

Almost surely, 2^{2665242439417} is an apocalyptic number.

It is an amenable number.

2665242439417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665242439417 is an equidigital number, since it uses as much as digits as its factorization.

2665242439417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 55.

The spelling of 2665242439417 in words is "two trillion, six hundred sixty-five billion, two hundred forty-two million, four hundred thirty-nine thousand, four hundred seventeen".