8638264789609 has 32 divisors (see below), whose sum is σ = 11118235645440. Its totient is φ = 6523205432832.

The previous prime is 8638264789607. The next prime is 8638264789631. The reversal of 8638264789609 is 9069874628368.

It is a cyclic number.

It is not a de Polignac number, because 8638264789609 - 2¹ = 8638264789607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8638264789607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3559054 + ... + 5472055.

It is an arithmetic number, because the mean of its divisors is an integer number (347444863920).

Almost surely, 2^{8638264789609} is an apocalyptic number.

It is an amenable number.

8638264789609 is a deficient number, since it is larger than the sum of its proper divisors (2479970855831).

8638264789609 is a wasteful number, since it uses less digits than its factorization.

8638264789609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031609.

The product of its (nonzero) digits is 1504935936, while the sum is 76.

The spelling of 8638264789609 in words is "eight trillion, six hundred thirty-eight billion, two hundred sixty-four million, seven hundred eighty-nine thousand, six hundred nine".