13261580555 has 8 divisors (see below), whose sum is σ = 16005885552. Its totient is φ = 10547938528.

The previous prime is 13261580513. The next prime is 13261580567. The reversal of 13261580555 is 55508516231.

13261580555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13261580555 - 2¹⁰ = 13261579531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7664789 + ... + 7666518.

It is an arithmetic number, because the mean of its divisors is an integer number (2000735694).

Almost surely, 2^13261580555 is an apocalyptic number.

13261580555 is a deficient number, since it is larger than the sum of its proper divisors (2744304997).

13261580555 is a wasteful number, since it uses less digits than its factorization.

13261580555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15331485.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 13261580555 in words is "thirteen billion, two hundred sixty-one million, five hundred eighty thousand, five hundred fifty-five".