2665242439487 has 2 divisors, whose sum is σ = 2665242439488. Its totient is φ = 2665242439486.

The previous prime is 2665242439477. The next prime is 2665242439513. The reversal of 2665242439487 is 7849342425662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2665242439487 - 2¹⁶ = 2665242373951 is a prime.

It is a super-2 number, since 2×2665242439487² (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 (2665242439417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332621219743 + 1332621219744.

It is an arithmetic number, because the mean of its divisors is an integer number (1332621219744).

Almost surely, 2^{2665242439487} is an apocalyptic number.

2665242439487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665242439487 is an equidigital number, since it uses as much as digits as its factorization.

2665242439487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139345920, while the sum is 62.

The spelling of 2665242439487 in words is "two trillion, six hundred sixty-five billion, two hundred forty-two million, four hundred thirty-nine thousand, four hundred eighty-seven".