8678646025009 has 4 divisors (see below), whose sum is σ = 8679892784740. Its totient is φ = 8677399265280.

The previous prime is 8678646025003. The next prime is 8678646025039. The reversal of 8678646025009 is 9005206468768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7302182085025 + 1376463939984 = 2702255^2 + 1173228^2 .

It is a cyclic number.

It is not a de Polignac number, because 8678646025009 - 2⁵ = 8678646024977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8678646025003) 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 3 ways as a sum of consecutive naturals, for example, 623369424 + ... + 623383345.

It is an arithmetic number, because the mean of its divisors is an integer number (2169973196185).

Almost surely, 2^{8678646025009} is an apocalyptic number.

It is an amenable number.

8678646025009 is a deficient number, since it is larger than the sum of its proper divisors (1246759731).

8678646025009 is a wasteful number, since it uses less digits than its factorization.

8678646025009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246759730.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 8678646025009 in words is "eight trillion, six hundred seventy-eight billion, six hundred forty-six million, twenty-five thousand, nine".