13185239061 has 4 divisors (see below), whose sum is σ = 17580318752. Its totient is φ = 8790159372.

The previous prime is 13185239059. The next prime is 13185239063. The reversal of 13185239061 is 16093258131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13185239059) and next prime (13185239063).

It is not a de Polignac number, because 13185239061 - 2¹ = 13185239059 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 (13185239063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197539841 + ... + 2197539846.

It is an arithmetic number, because the mean of its divisors is an integer number (4395079688).

Almost surely, 2^13185239061 is an apocalyptic number.

It is an amenable number.

13185239061 is a deficient number, since it is larger than the sum of its proper divisors (4395079691).

13185239061 is an equidigital number, since it uses as much as digits as its factorization.

13185239061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395079690.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 13185239061 in words is "thirteen billion, one hundred eighty-five million, two hundred thirty-nine thousand, sixty-one".