12679842561 has 8 divisors (see below), whose sum is σ = 16915924704. Its totient is φ = 8448494400.

The previous prime is 12679842493. The next prime is 12679842587. The reversal of 12679842561 is 16524897621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12679842561 - 2¹³ = 12679834369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12679842061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177240 + ... + 1187961.

It is an arithmetic number, because the mean of its divisors is an integer number (2114490588).

Almost surely, 2^12679842561 is an apocalyptic number.

It is an amenable number.

12679842561 is a deficient number, since it is larger than the sum of its proper divisors (4236082143).

12679842561 is a wasteful number, since it uses less digits than its factorization.

12679842561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366991.

The product of its digits is 1451520, while the sum is 51.

The spelling of 12679842561 in words is "twelve billion, six hundred seventy-nine million, eight hundred forty-two thousand, five hundred sixty-one".