13260886421 has 4 divisors (see below), whose sum is σ = 13263339852. Its totient is φ = 13258432992.

The previous prime is 13260886411. The next prime is 13260886531. The reversal of 13260886421 is 12468806231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1180678321 + 12080208100 = 34361^2 + 109910^2 .

It is a cyclic number.

It is not a de Polignac number, because 13260886421 - 2¹⁰ = 13260885397 is a prime.

It is a super-2 number, since 2×13260886421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260886411) 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, 1218590 + ... + 1229423.

It is an arithmetic number, because the mean of its divisors is an integer number (3315834963).

Almost surely, 2^13260886421 is an apocalyptic number.

It is an amenable number.

13260886421 is a deficient number, since it is larger than the sum of its proper divisors (2453431).

13260886421 is an equidigital number, since it uses as much as digits as its factorization.

13260886421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453430.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 13260886421 in words is "thirteen billion, two hundred sixty million, eight hundred eighty-six thousand, four hundred twenty-one".