7689430806645 has 64 divisors (see below), whose sum is σ = 14434729795584. Its totient is φ = 3422024686080.

The previous prime is 7689430806611. The next prime is 7689430806661. The reversal of 7689430806645 is 5466080349867.

It is not a de Polignac number, because 7689430806645 - 2¹⁵ = 7689430773877 is a prime.

It is a super-2 number, since 2×7689430806645² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64314 + ... + 3922116.

It is an arithmetic number, because the mean of its divisors is an integer number (225542653056).

Almost surely, 2^{7689430806645} is an apocalyptic number.

It is an amenable number.

7689430806645 is a deficient number, since it is larger than the sum of its proper divisors (6745298988939).

7689430806645 is a wasteful number, since it uses less digits than its factorization.

7689430806645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858322.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 7689430806645 in words is "seven trillion, six hundred eighty-nine billion, four hundred thirty million, eight hundred six thousand, six hundred forty-five".