13185947261 has 8 divisors (see below), whose sum is σ = 13744451040. Its totient is φ = 12638081808.

The previous prime is 13185947239. The next prime is 13185947267. The reversal of 13185947261 is 16274958131.

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 13185947261 - 2¹⁰ = 13185946237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13185947267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2657051 + ... + 2662008.

It is an arithmetic number, because the mean of its divisors is an integer number (1718056380).

Almost surely, 2^13185947261 is an apocalyptic number.

It is an amenable number.

13185947261 is a deficient number, since it is larger than the sum of its proper divisors (558503779).

13185947261 is an equidigital number, since it uses as much as digits as its factorization.

13185947261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5319163.

The product of its digits is 362880, while the sum is 47.

The spelling of 13185947261 in words is "thirteen billion, one hundred eighty-five million, nine hundred forty-seven thousand, two hundred sixty-one".