13261431461 has 4 divisors (see below), whose sum is σ = 13262345472. Its totient is φ = 13260517452.

The previous prime is 13261431457. The next prime is 13261431473. The reversal of 13261431461 is 16413416231.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16413416231 = 75641 ⋅216991.

It is a cyclic number.

It is not a de Polignac number, because 13261431461 - 2² = 13261431457 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 (13261431661) 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, 434885 + ... + 464378.

It is an arithmetic number, because the mean of its divisors is an integer number (3315586368).

Almost surely, 2^13261431461 is an apocalyptic number.

It is an amenable number.

13261431461 is a deficient number, since it is larger than the sum of its proper divisors (914011).

13261431461 is an equidigital number, since it uses as much as digits as its factorization.

13261431461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914010.

The product of its digits is 10368, while the sum is 32.

Adding to 13261431461 its reverse (16413416231), we get a palindrome (29674847692).

The spelling of 13261431461 in words is "thirteen billion, two hundred sixty-one million, four hundred thirty-one thousand, four hundred sixty-one".