13261643355 has 8 divisors (see below), whose sum is σ = 21218629392. Its totient is φ = 7072876448.

The previous prime is 13261643321. The next prime is 13261643371. The reversal of 13261643355 is 55334616231.

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 13261643355 - 2⁸ = 13261643099 is a prime.

It is an unprimeable number.

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, 442054764 + ... + 442054793.

It is an arithmetic number, because the mean of its divisors is an integer number (2652328674).

Almost surely, 2^13261643355 is an apocalyptic number.

13261643355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13261643355 is a deficient number, since it is larger than the sum of its proper divisors (7956986037).

13261643355 is an equidigital number, since it uses as much as digits as its factorization.

13261643355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884109565.

The product of its digits is 194400, while the sum is 39.

The spelling of 13261643355 in words is "thirteen billion, two hundred sixty-one million, six hundred forty-three thousand, three hundred fifty-five".