8645108461665 has 64 divisors (see below), whose sum is σ = 15330731673600. Its totient is φ = 4132378128384.

The previous prime is 8645108461621. The next prime is 8645108461667. The reversal of 8645108461665 is 5661648015468.

It is a happy number.

It is not a de Polignac number, because 8645108461665 - 2⁷ = 8645108461537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8645108461599 and 8645108461608.

It is not an unprimeable number, because it can be changed into a prime (8645108461667) 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 in 63 ways as a sum of consecutive naturals, for example, 2205241 + ... + 4706729.

It is an arithmetic number, because the mean of its divisors is an integer number (239542682400).

Almost surely, 2^{8645108461665} is an apocalyptic number.

It is an amenable number.

8645108461665 is a deficient number, since it is larger than the sum of its proper divisors (6685623211935).

8645108461665 is a wasteful number, since it uses less digits than its factorization.

8645108461665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502026.

The product of its (nonzero) digits is 33177600, while the sum is 60.

The spelling of 8645108461665 in words is "eight trillion, six hundred forty-five billion, one hundred eight million, four hundred sixty-one thousand, six hundred sixty-five".