39664912242617 has 16 divisors (see below), whose sum is σ = 41150526506640. Its totient is φ = 38187163779072.

The previous prime is 39664912242569. The next prime is 39664912242649. The reversal of 39664912242617 is 71624221946693.

It can be written as a sum of positive squares in 8 ways, for example, as 266053766416 + 39398858476201 = 515804^2 + 6276851^2 .

It is a cyclic number.

It is not a de Polignac number, because 39664912242617 - 2²⁴ = 39664895465401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39664912242617.

It is not an unprimeable number, because it can be changed into a prime (39664912242667) 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 15 ways as a sum of consecutive naturals, for example, 329950073 + ... + 330070265.

It is an arithmetic number, because the mean of its divisors is an integer number (2571907906665).

Almost surely, 2^{39664912242617} is an apocalyptic number.

It is an amenable number.

39664912242617 is a deficient number, since it is larger than the sum of its proper divisors (1485614264023).

39664912242617 is a wasteful number, since it uses less digits than its factorization.

39664912242617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152812.

The product of its digits is 47029248, while the sum is 62.

The spelling of 39664912242617 in words is "thirty-nine trillion, six hundred sixty-four billion, nine hundred twelve million, two hundred forty-two thousand, six hundred seventeen".