2640026148085 has 4 divisors (see below), whose sum is σ = 3168031377708. Its totient is φ = 2112020918464.

The previous prime is 2640026148047. The next prime is 2640026148143. The reversal of 2640026148085 is 5808416200462.

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 1588913191441 + 1051112956644 = 1260521^2 + 1025238^2 .

It is a cyclic number.

It is not a de Polignac number, because 2640026148085 - 2⁹ = 2640026147573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 264002614804 + ... + 264002614813.

It is an arithmetic number, because the mean of its divisors is an integer number (792007844427).

Almost surely, 2^{2640026148085} is an apocalyptic number.

It is an amenable number.

2640026148085 is a deficient number, since it is larger than the sum of its proper divisors (528005229623).

2640026148085 is an equidigital number, since it uses as much as digits as its factorization.

2640026148085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528005229622.

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 2640026148085 in words is "two trillion, six hundred forty billion, twenty-six million, one hundred forty-eight thousand, eighty-five".