7999679655585 has 48 divisors (see below), whose sum is σ = 14682101181696. Its totient is φ = 4015433531904.

The previous prime is 7999679655571. The next prime is 7999679655587. The reversal of 7999679655585 is 5855569769997.

It is not a de Polignac number, because 7999679655585 - 2⁸ = 7999679655329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7999679655495 and 7999679655504.

It is not an unprimeable number, because it can be changed into a prime (7999679655587) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43871272 + ... + 44053238.

It is an arithmetic number, because the mean of its divisors is an integer number (305877107952).

Almost surely, 2^{7999679655585} is an apocalyptic number.

It is an amenable number.

7999679655585 is a deficient number, since it is larger than the sum of its proper divisors (6682421526111).

7999679655585 is a wasteful number, since it uses less digits than its factorization.

7999679655585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239462 (or 239459 counting only the distinct ones).

The product of its digits is 57868020000, while the sum is 90.

The spelling of 7999679655585 in words is "seven trillion, nine hundred ninety-nine billion, six hundred seventy-nine million, six hundred fifty-five thousand, five hundred eighty-five".