13266667985 has 8 divisors (see below), whose sum is σ = 15920922600. Its totient is φ = 10612720384.

The previous prime is 13266667951. The next prime is 13266667993. The reversal of 13266667985 is 58976666231.

It can be written as a sum of positive squares in 4 ways, for example, as 815902096 + 12450765889 = 28564^2 + 111583^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13266667985 - 2²² = 13262473681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32441 + ... + 166089.

It is an arithmetic number, because the mean of its divisors is an integer number (1990115325).

Almost surely, 2^13266667985 is an apocalyptic number.

It is an amenable number.

13266667985 is a deficient number, since it is larger than the sum of its proper divisors (2654254615).

13266667985 is a wasteful number, since it uses less digits than its factorization.

13266667985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153507.

The product of its digits is 19595520, while the sum is 59.

The spelling of 13266667985 in words is "thirteen billion, two hundred sixty-six million, six hundred sixty-seven thousand, nine hundred eighty-five".