8339947441665 has 16 divisors (see below), whose sum is σ = 15250189607808. Its totient is φ = 3812547401856.

The previous prime is 8339947441607. The next prime is 8339947441669. The reversal of 8339947441665 is 5661447499338.

It is not a de Polignac number, because 8339947441665 - 2⁶ = 8339947441601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8339947441665.

It is not an unprimeable number, because it can be changed into a prime (8339947441669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39714035332 + ... + 39714035541.

It is an arithmetic number, because the mean of its divisors is an integer number (953136850488).

Almost surely, 2^{8339947441665} is an apocalyptic number.

It is an amenable number.

8339947441665 is a deficient number, since it is larger than the sum of its proper divisors (6910242166143).

8339947441665 is a wasteful number, since it uses less digits than its factorization.

8339947441665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79428070888.

The product of its digits is 470292480, while the sum is 69.

The spelling of 8339947441665 in words is "eight trillion, three hundred thirty-nine billion, nine hundred forty-seven million, four hundred forty-one thousand, six hundred sixty-five".